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Import backup from 2005-05-12

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This commit is contained in:
Josh Holtrop 2005-05-12 22:00:00 -04:00
parent 14792ef954
commit b0132c866e
35 changed files with 1637 additions and 872 deletions
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9
Makefile
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@ -7,12 +7,15 @@ FLOPPY_MOUNT=./mnt_flp
FLOPPY_IMAGE=hos.flp FLOPPY_IMAGE=hos.flp
GRUB_IMAGE=grub.flp GRUB_IMAGE=grub.flp
INITRD=hos_initrd INITRD=hos_initrd
INITRD_DIR=initrd
INITRD_MOUNT=./mnt_initrd INITRD_MOUNT=./mnt_initrd
INITRD_SIZE=100 #initrd size in kb INITRD_SIZE=100 #initrd size in kb
# Do not print "Entering directory ..." # Do not print "Entering directory ..."
MAKEFLAGS += --no-print-directory MAKEFLAGS += --no-print-directory
.PHONY: initrd
all: all:
make -C kernel make -C kernel
make -C rmmod make -C rmmod
@ -64,9 +67,7 @@ initrd:
mke2fs -Fv -m0 -r0 -i1024 $(INITRD) mke2fs -Fv -m0 -r0 -i1024 $(INITRD)
-mkdir $(INITRD_MOUNT) -mkdir $(INITRD_MOUNT)
mount -t ext2 -o loop $(INITRD) $(INITRD_MOUNT) mount -t ext2 -o loop $(INITRD) $(INITRD_MOUNT)
mkdir $(INITRD_MOUNT)/bin cp -Pr $(INITRD_DIR)/* $(INITRD_MOUNT)
cp apps/hash/hash $(INITRD_MOUNT)/bin
ln -s /bin/hash $(INITRD_MOUNT)/bin/init
umount $(INITRD_MOUNT) umount $(INITRD_MOUNT)
rm -rf $(INITRD_MOUNT) rm -rf $(INITRD_MOUNT)

73
kernel/Makefile
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@ -9,40 +9,67 @@ NASM_FLAGS=-f aout
# C Information: # C Information:
CC=gcc CC=gcc
CPP=g++
CC_FLAGS=-fleading-underscore -fno-builtin -nostdlib -nostartfiles -nodefaultlibs -I. -Wall CC_FLAGS=-fleading-underscore -fno-builtin -nostdlib -nostartfiles -nodefaultlibs -I. -Wall
CPP_FLAGS=$(CC_FLAGS) -fno-rtti -fno-exceptions
# Linker Information: # Linker Information:
LD=ld LD=ld
LD_FLAGS=-nodefaultlibs -nostdlib --no-demangle -T link.ld LD_FLAGS=-nodefaultlibs -nostdlib --no-demangle -T link.ld
all: Asm_Kernel C_Kernel all: Asm_Kernel C_Kernel
$(LD) $(LD_FLAGS) -Map kernel.map \ @echo ' LD kernel.bin'
boot.o kernel.o lang_a.o mm.o vmm.o parallel.o conv.o kout.o \ @$(LD) $(LD_FLAGS) -Map kernel.map \
vconsole.o display.o devices.o pic.o keyboard.o ramdisk.o vfs.o \ boot.o kernel.o lang_a.o mm.o vmm.o conv.o kout.o \
devfs.o ext2.o lang_c.o vesafb.o -o kernel.bin vconsole.o display.o devices.o pic.o keyboard.o \
ramdisk.o vfs.o lang_c.o vesafb.o \
string.o new.o ext2.o misc_char.o -o kernel.bin
@echo ' Kernel built: ' `ls -sk kernel.bin | cut -d' ' -f1`kb
Asm_Kernel: Asm_Kernel:
$(NASM) $(NASM_FLAGS) -l boot.lst boot.asm -o boot.o @echo ' NASM boot.o'
$(NASM) $(NASM_FLAGS) -l lang.lst lang/lang.asm -o lang_a.o @$(NASM) $(NASM_FLAGS) -l boot.lst boot.asm -o boot.o
@echo ' NASM lang_a.o'
@$(NASM) $(NASM_FLAGS) -l lang.lst lang/lang.asm -o lang_a.o
C_Kernel: C_Kernel:
$(CC) $(CC_FLAGS) -c kernel.c -o kernel.o @echo ' CC kernel.o'
$(CC) $(CC_FLAGS) -c mm/mm.c -o mm.o @$(CC) $(CC_FLAGS) -c kernel.c -o kernel.o
$(CC) $(CC_FLAGS) -c mm/vmm.c -o vmm.o @echo ' CC mm.o'
$(CC) $(CC_FLAGS) -c char/parallel.c -o parallel.o @$(CC) $(CC_FLAGS) -c mm/mm.c -o mm.o
$(CC) $(CC_FLAGS) -c lang/conv.c -o conv.o @echo ' CC vmm.o'
$(CC) $(CC_FLAGS) -c display/kout.c -o kout.o @$(CC) $(CC_FLAGS) -c mm/vmm.c -o vmm.o
$(CC) $(CC_FLAGS) -c char/vconsole.c -o vconsole.o @echo ' CC conv.o'
$(CC) $(CC_FLAGS) -c fs/devices.c -o devices.o @$(CC) $(CC_FLAGS) -c lang/conv.c -o conv.o
$(CC) $(CC_FLAGS) -c display/display.c -o display.o @echo ' CC kout.o'
$(CC) $(CC_FLAGS) -c sys/pic.c -o pic.o @$(CC) $(CC_FLAGS) -c display/kout.c -o kout.o
$(CC) $(CC_FLAGS) -c char/keyboard.c -o keyboard.o @echo ' CC display.o'
$(CC) $(CC_FLAGS) -c block/ramdisk.c -o ramdisk.o @$(CC) $(CC_FLAGS) -c display/display.c -o display.o
$(CC) $(CC_FLAGS) -c fs/devfs.c -o devfs.o @echo ' CC pic.o'
$(CC) $(CC_FLAGS) -c fs/vfs.c -o vfs.o @$(CC) $(CC_FLAGS) -c sys/pic.c -o pic.o
$(CC) $(CC_FLAGS) -c fs/ext2.c -o ext2.o @echo ' CC keyboard.o'
$(CC) $(CC_FLAGS) -c lang/lang.c -o lang_c.o @$(CC) $(CC_FLAGS) -c char/keyboard.c -o keyboard.o
$(CC) $(CC_FLAGS) -c display/vesafb.c -o vesafb.o @echo ' CC lang_c.o'
@$(CC) $(CC_FLAGS) -c lang/lang.c -o lang_c.o
@echo ' CC vesafb.o'
@$(CC) $(CC_FLAGS) -c display/vesafb.c -o vesafb.o
@echo ' CPP string.o'
@$(CPP) $(CPP_FLAGS) -c lang/string.cpp -o string.o
@echo ' CPP new.o'
@$(CPP) $(CPP_FLAGS) -c lang/new.cpp -o new.o
@echo ' CPP vfs.o'
@$(CPP) $(CPP_FLAGS) -c fs/vfs.cpp -o vfs.o
@echo ' CPP ext2.o'
@$(CPP) $(CPP_FLAGS) -c fs/ext2.cpp -o ext2.o
@echo ' CPP misc_char.o'
@$(CPP) $(CPP_FLAGS) -c char/misc_char.cpp -o misc_char.o
@echo ' CPP ramdisk.o'
@$(CPP) $(CPP_FLAGS) -c block/ramdisk.cpp -o ramdisk.o
@echo ' CPP vconsole.o'
@$(CPP) $(CPP_FLAGS) -c char/vconsole.cpp -o vconsole.o
@echo ' CPP devices.o'
@$(CPP) $(CPP_FLAGS) -c devices.cpp -o devices.o
################################################# #################################################
# Clean up the source directory of any binaries # # Clean up the source directory of any binaries #

93
kernel/block/ramdisk.cpp Normal file
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@ -0,0 +1,93 @@
// ramdisk.cpp
// Author: Josh Holtrop
// Date: 08/20/04
// Modified: 05/11/05
#define _HOS_CPP_ _HOS_CPP_
extern "C"
{
#include "functions.h"
#include "mm/vmm.h"
#include "lang/lang.h"
}
#include "block/ramdisk.h"
#include "devices.h"
ramdisk_t *ramdisks[256];
minor_t ramdisk_new(u32_t size)
{
int i;
for (i = 0; i < 256; i++)
{
if (!ramdisks[i])
{
void *start;
if (( start = kmalloc(size) ))
{
ramdisks[i] = (ramdisk_t *)New(ramdisk_t);
ramdisks[i]->start = start;
ramdisks[i]->size = size;
return i;
}
return -2;
}
}
return -1;
}
minor_t ramdisk_register(void *ramdisk, u32_t size)
{
int i;
for (i = 0; i < 256; i++)
{
if (!ramdisks[i])
{
ramdisks[i] = (ramdisk_t *)New(ramdisk_t);
ramdisks[i]->start = ramdisk;
ramdisks[i]->size = size;
return i;
}
}
return -1;
}
int ramdisk_remove(minor_t minor)
{
if (ramdisks[minor])
{
kfree(ramdisks[minor]->start);
kfree(ramdisks[minor]);
ramdisks[minor] = NULL;
return 0;
}
return -1;
}
int Ramdisk::block_read(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
{
if (!ramdisks[minor])
return -1;
if ((blockStart << BLOCK_SIZE_LOG) >= ramdisks[minor]->size)
return -2;
void *rdAddr = (void *)((u32_t)ramdisks[minor]->start + (blockStart << BLOCK_SIZE_LOG));
u32_t copyLen = min(blocks << BLOCK_SIZE_LOG, ramdisks[minor]->size + (u32_t)ramdisks[minor]->start - (u32_t)rdAddr);
memcpyd(buffer, rdAddr, copyLen >> 2);
return copyLen;
}
int Ramdisk::block_write(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
{
if (!ramdisks[minor])
return -1;
if ((blockStart << BLOCK_SIZE_LOG) >= ramdisks[minor]->size)
return -2;
void *rdAddr = (void *)((u32_t)ramdisks[minor]->start + (blockStart << BLOCK_SIZE_LOG));
u32_t copyLen = min(blocks << BLOCK_SIZE_LOG, ramdisks[minor]->size + (u32_t)ramdisks[minor]->start - (u32_t)rdAddr);
memcpyd(rdAddr, buffer, copyLen >> 2);
return copyLen;
}

21
kernel/block/ramdisk.h
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@ -6,20 +6,33 @@
#ifndef __HOS_RD_H__ #ifndef __HOS_RD_H__
#define __HOS_RD_H__ __HOS_RD_H__ #define __HOS_RD_H__ __HOS_RD_H__
#ifdef _HOS_CPP_
extern "C" {
#endif
#include "hos_defines.h" #include "hos_defines.h"
#include "fs/devices.h" #include "devices.h"
typedef struct { typedef struct {
void *start; void *start;
u32_t size; u32_t size;
} ramdisk_t; } ramdisk_t;
int ramdisk_init(major_t major);
minor_t ramdisk_new(u32_t size); minor_t ramdisk_new(u32_t size);
minor_t ramdisk_register(void *ramdisk, u32_t size); minor_t ramdisk_register(void *ramdisk, u32_t size);
int ramdisk_remove(minor_t minor); int ramdisk_remove(minor_t minor);
int ramdisk_block_read(minor_t minor, u32_t blockNum, u32_t count, void *buffer);
int ramdisk_block_write(minor_t minor, u32_t blockNum, u32_t count, void *buffer); #ifdef _HOS_CPP_
}
class Ramdisk : public DeviceDriver
{
public:
int block_read(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer);
int block_write(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer);
};
#endif
#endif #endif

0
kernel/block/ramdisk.c → kernel/block/ramdisk_old.c
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25
kernel/block/ramdisk_old.h Normal file
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@ -0,0 +1,25 @@
// ramdisk.h
// Author: Josh Holtrop
// Date: 08/20/04
// Modified: 08/22/04
#ifndef __HOS_RD_H__
#define __HOS_RD_H__ __HOS_RD_H__
#include "hos_defines.h"
#include "fs/devices.h"
typedef struct {
void *start;
u32_t size;
} ramdisk_t;
int ramdisk_init(major_t major);
minor_t ramdisk_new(u32_t size);
minor_t ramdisk_register(void *ramdisk, u32_t size);
int ramdisk_remove(minor_t minor);
int ramdisk_block_read(minor_t minor, u32_t blockNum, u32_t count, void *buffer);
int ramdisk_block_write(minor_t minor, u32_t blockNum, u32_t count, void *buffer);
#endif

46
kernel/char/misc_char.cpp Normal file
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@ -0,0 +1,46 @@
// misc_char.cpp
// Miscellaneous character devices
// Author: Josh Holtrop
// Date: 05/11/05
// Modified: 05/11/05
#define _HOS_CPP_ _HOS_CPP_
#include "hos_defines.h"
#include "devices.h"
#include "misc_char.h"
#include "sys/io.h"
int MiscChar::char_read(minor_t minor)
{
switch (minor)
{
case MISC_CHAR_NULL:
return DEV_EOF;
case MISC_CHAR_ZERO:
return 0;
case MISC_CHAR_LP0:
return DEV_INVALID_ACCESS;
default:
return DEV_INVALID_ACCESS;
}
}
int MiscChar::char_write(minor_t minor, int c)
{
switch (minor)
{
case MISC_CHAR_NULL:
return 0;
case MISC_CHAR_ZERO:
return 0;
case MISC_CHAR_LP0:
outportb(0x37a, 0xc);
outportb(0x378, c);
outportb(0x37a, 0x1);
return 0;
default:
return DEV_INVALID_ACCESS;
}
}

31
kernel/char/misc_char.h Normal file
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@ -0,0 +1,31 @@
// misc_char.h
// Miscellaneous character devices
// Author: Josh Holtrop
// Date: 05/11/05
// Modified: 05/11/05
#ifndef __HOS_MISC_CHAR__
#define __HOS_MISC_CHAR__ __HOS_MISC_CHAR__
#define MISC_CHAR_NULL 3
#define MISC_CHAR_ZERO 5
#define MISC_CHAR_LP0 10
#include "hos_defines.h"
#include "devices.h"
#include "misc_char.h"
#ifdef _HOS_CPP_
class MiscChar : public DeviceDriver
{
public:
int char_read(minor_t minor);
int char_write(minor_t minor, int c);
};
#endif
#endif

36
kernel/char/parallel.c
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@ -1,36 +0,0 @@
// parallel.c
// Author: Josh Holtrop
// Date: 08/02/04
// Modified: 08/16/04
#include "hos_defines.h"
#include "functions.h"
#include "char/parallel.h"
#include "fs/devices.h"
#include "mm/vmm.h"
// initialization routine for vconsoles module
int parallel_init(major_t major)
{
dev_driver_t *parallel_driver;
if (( parallel_driver = New(dev_driver_t) ))
{
parallel_driver->char_write = parallel_char_write;
devices_register_major('c', major, parallel_driver);
// register parallel devices as /dev/lp0, etc...
return 0;
}
return -1;
}
int parallel_char_write(minor_t minor, int c)
{
if (minor == 0)
{
outportb(0x37a, 0xc);
outportb(0x378, c);
outportb(0x37a, 0x1);
}
return 0;
}

15
kernel/char/parallel.h
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@ -1,15 +0,0 @@
// parallel.h
// Author: Josh Holtrop
// Date: 08/02/04
#ifndef __HOS_PARALLEL__
#define __HOS_PARALLEL__ __HOS_PARALLEL__
#include "hos_defines.h"
#include "fs/devices.h"
int parallel_init(major_t major);
int parallel_char_write(minor_t minor, int c);
#endif

302
kernel/char/vconsole.c
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@ -1,302 +0,0 @@
// vconsole.c
// Author: Josh Holtrop
// Date: 08/02/04
// Modified: 08/16/04
#include "char/vconsole.h"
#include "hos_defines.h"
#include "fs/devices.h"
#include "mm/vmm.h"
#include "lang/lang.h"
#include "display/display.h"
#include "functions.h"
vconsole_t *vconsoles[VCONSOLE_MAX]; // pointer to virtual console structs
extern int display_activeConsole; // display subsystem active virtual console number
char ansi2vgaAttr[8] = {0, 4, 2, 6, 1, 5, 3, 7};
void vconsole_put_char(minor_t id, int c);
void vconsole_update_cursor(minor_t id, u16_t position);
void vconsole_update_attribute(minor_t id);
void vconsole_refresh(minor_t id);
// initialization routine for vconsoles module
int vconsole_init(major_t major)
{
dev_driver_t *vconsole_driver;
if (( vconsole_driver = New(dev_driver_t) ))
{
vconsole_driver->char_write = vconsole_char_write;
devices_register_major('c', major, vconsole_driver);
return 0;
}
return -1;
}
// routine to create a new virtual console object
minor_t vconsole_new(int width, int height)
{
int i;
for (i = 1; i < VCONSOLE_MAX; i++)
{
if ( (!vconsoles[i]) && ( vconsoles[i] = New(vconsole_t) ) )
{
if (( vconsoles[i]->buffer = kmalloc(width * height * 2) ))
{
vconsoles[i]->width = width;
vconsoles[i]->height = height;
vconsoles[i]->attribute = vconsoles[i]->foreground = 0x07;
memsetw(vconsoles[i]->buffer, 0x0720, width * height);
// TODO: register the device as /dev/console%d
return i;
}
else
{
kfree(vconsoles[i]);
return 0;
}
}
}
return 0;
}
// called by display subsystem to draw a virtual console to the screen
int vconsole_draw(minor_t id)
{
if (vconsoles[id])
return display_console_draw(id, vconsoles[id]->cursorPosition,
vconsoles[id]->buffer, vconsoles[id]->width * vconsoles[id]->height);
return -1;
}
// called by character device interface when a character is written to device w/ minor #id
int vconsole_char_write(minor_t id, int c)
{
if (!vconsoles[id])
return -1;
int cursorY = vconsoles[id]->cursorPosition / vconsoles[id]->width;
int cursorX = vconsoles[id]->cursorPosition % vconsoles[id]->width;
int evalEscapePosition = 0;
switch (vconsoles[id]->escapeLevel)
{
case 2:
if (c >= '0' && c <= '9') // c is part of an escape value
{
vconsoles[id]->escapeValue[vconsoles[id]->escapePosition] *= 10;
vconsoles[id]->escapeValue[vconsoles[id]->escapePosition] += c - '0';
return 0;
}
else if (c == ';')
{
if (vconsoles[id]->escapePosition < 7)
vconsoles[id]->escapePosition++;
return 0;
}
switch (c)
{
case 'A': // move cursor up n rows
cursorY -= vconsoles[id]->escapeValue[0];
if (cursorY < 0)
cursorY = 0;
vconsole_update_cursor(id, cursorY * vconsoles[id]->width + cursorX);
break;
case 'B': // move cursor down n rows
cursorY += vconsoles[id]->escapeValue[0];
if (cursorY >= vconsoles[id]->height)
cursorY = vconsoles[id]->height - 1;
vconsole_update_cursor(id, cursorY * vconsoles[id]->width + cursorX);
break;
case 'C': // move cursor left n columns
cursorX -= vconsoles[id]->escapeValue[0];
if (cursorX < 0)
cursorX = 0;
vconsole_update_cursor(id, cursorY * vconsoles[id]->width + cursorX);
break;
case 'D': // move cursor right n columns
cursorX += vconsoles[id]->escapeValue[0];
if (cursorX >= vconsoles[id]->width)
cursorX = vconsoles[id]->width - 1;
vconsole_update_cursor(id, cursorY * vconsoles[id]->width + cursorX);
break;
case 'H':
case 'f': // move cursor to position (x,y) upper left is (1,1)
cursorX = vconsoles[id]->escapeValue[0] - 1;
cursorY = vconsoles[id]->escapeValue[1] - 1;
if (cursorY < 0)
cursorY = 0;
if (cursorY >= vconsoles[id]->height)
cursorY = vconsoles[id]->height - 1;
if (cursorX < 0)
cursorX = 0;
if (cursorX >= vconsoles[id]->width)
cursorX = vconsoles[id]->width - 1;
vconsole_update_cursor(id, cursorY * vconsoles[id]->width + cursorX);
break;
case 'J': // clear screen, home cursor
memsetw(vconsoles[id]->buffer, 0x0720, vconsoles[id]->width * vconsoles[id]->height);
vconsole_draw(id);
vconsole_update_cursor(id, 0);
break;
case 'K': // erase line from cursor position (including char. under cursor) to end of line
memsetw(vconsoles[id]->buffer + vconsoles[id]->cursorPosition, 0x0720, vconsoles[id]->width - cursorX);
vconsole_draw(id);
break;
case 's': // push cursor position on an internal stack
if (vconsoles[id]->cursorStackPosition < 16)
vconsoles[id]->cursorStack[vconsoles[id]->cursorStackPosition++] = vconsoles[id]->cursorPosition;
break;
case 'u': // pop cursor position from stack
if (vconsoles[id]->cursorStackPosition > 0)
vconsole_update_cursor(id, vconsoles[id]->cursorStack[--vconsoles[id]->cursorStackPosition]);
break;
case 'm': // set text attributes
for (evalEscapePosition = 0; evalEscapePosition <= vconsoles[id]->escapePosition; evalEscapePosition++)
{
switch (vconsoles[id]->escapeValue[evalEscapePosition])
{
case 0:
vconsoles[id]->foreground = 0x07;
vconsoles[id]->background = 0x00;
vconsoles[id]->concealed = 0;
vconsoles[id]->reverse = 0;
vconsoles[id]->blink = 0;
vconsoles[id]->bold = 0;
vconsole_update_attribute(id);
break;
case 1:
vconsoles[id]->bold = 1;
vconsole_update_attribute(id);
break;
case 5:
vconsoles[id]->blink = 1;
vconsole_update_attribute(id);
break;
case 7:
vconsoles[id]->reverse = 1;
vconsole_update_attribute(id);
break;
case 30:
case 31:
case 32:
case 33:
case 34:
case 35:
case 36:
case 37:
vconsoles[id]->foreground = ansi2vgaAttr[vconsoles[id]->escapeValue[evalEscapePosition] - 30];
vconsole_update_attribute(id);
break;
case 40:
case 41:
case 42:
case 43:
case 44:
case 45:
case 46:
case 47:
vconsoles[id]->background = ansi2vgaAttr[vconsoles[id]->escapeValue[evalEscapePosition] - 40];
vconsole_update_attribute(id);
break;
}
}
vconsoles[id]->escapePosition = 0;
break;
}
memsetd(vconsoles[id]->escapeValue, 0, 8);
vconsoles[id]->escapePosition = 0;
vconsoles[id]->escapeLevel = 0;
return 0;
case 1:
if (c == '[')
vconsoles[id]->escapeLevel = 2;
break;
vconsoles[id]->escapeLevel = 0;
return 0; // invalid escape sequence
default:
if (c == '\e')
{
vconsoles[id]->escapeLevel = 1;
return 0;
}
vconsole_put_char(id, c);
}
return 0;
}
// write the character to the virtual console
void vconsole_put_char(minor_t id, int c)
{
if (!vconsoles[id]->concealed)
{
switch (c)
{
case '\t':
if (vconsoles[id]->cursorPosition % 8)
vconsole_update_cursor(id, vconsoles[id]->cursorPosition + (8 - (vconsoles[id]->cursorPosition % 8)));
else
vconsole_update_cursor(id, vconsoles[id]->cursorPosition + 8);
break;
case '\n':
if (vconsoles[id]->cursorPosition % (vconsoles[id]->width))
vconsole_update_cursor(id, vconsoles[id]->cursorPosition + (vconsoles[id]->width - (vconsoles[id]->cursorPosition % vconsoles[id]->width)));
else
vconsole_update_cursor(id, vconsoles[id]->cursorPosition + vconsoles[id]->width);
break;
default:
vconsoles[id]->buffer[vconsoles[id]->cursorPosition] = c | (vconsoles[id]->attribute << 8);
if (id == display_activeConsole)
display_console_put_char(id, c | (vconsoles[id]->attribute << 8), vconsoles[id]->cursorPosition);
vconsole_update_cursor(id, vconsoles[id]->cursorPosition + 1);
}
}
}
void vconsole_update_cursor(minor_t id, u16_t position)
{
vconsoles[id]->cursorPosition = position;
if (position >= (vconsoles[id]->width * vconsoles[id]->height)) // time to scroll console
{
int i;
for (i = 0; i < vconsoles[id]->cursorStackPosition; i++)
{
vconsoles[id]->cursorStack[i] -= vconsoles[id]->width;
if (vconsoles[id]->cursorStack[i] < 0)
vconsoles[id]->cursorStack[i] = 0;
}
vconsoles[id]->cursorPosition -= vconsoles[id]->width;
memcpyw(vconsoles[id]->buffer, vconsoles[id]->buffer + vconsoles[id]->width, vconsoles[id]->width * (vconsoles[id]->height - 1));
memsetw(vconsoles[id]->buffer + (vconsoles[id]->width * (vconsoles[id]->height - 1)), 0x0720, vconsoles[id]->width);
if (display_activeConsole == id)
{
vconsole_draw(id);
return;
}
}
if (display_activeConsole == id)
display_console_update_cursor(id, position);
}
void vconsole_update_attribute(minor_t id)
{
if (vconsoles[id]->reverse)
{
vconsoles[id]->attribute =
vconsoles[id]->blink << 7 |
vconsoles[id]->foreground << 4 |
vconsoles[id]->bold << 3 |
vconsoles[id]->background;
}
else
{
vconsoles[id]->attribute =
vconsoles[id]->blink << 7 |
vconsoles[id]->background << 4 |
vconsoles[id]->bold << 3 |
vconsoles[id]->foreground;
}
}

258
kernel/char/vconsole.cpp Normal file
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@ -0,0 +1,258 @@
// vconsole.cpp
// Author: Josh Holtrop
// Date: 08/02/04
// Modified: 05/11/05
#define _HOS_CPP_ _HOS_CPP_
extern "C"
{
#include "hos_defines.h"
#include "mm/vmm.h"
#include "lang/lang.h"
#include "display/display.h"
#include "functions.h"
}
#include "devices.h"
#include "char/vconsole.h"
VConsole *vconsoles[VCONSOLE_MAX]; // pointer to virtual console structs
extern int display_activeConsole; // display subsystem active virtual console number
char ansi2vgaAttr[8] = {0, 4, 2, 6, 1, 5, 3, 7};
void vconsole_setup(int width, int height)
{
for (int i = 0; i < VCONSOLE_MAX; i++)
vconsoles[i] = new VConsole(width, height);
}
VConsoleDriver::~VConsoleDriver()
{
for (int i = 0; i < VCONSOLE_MAX; i++)
if (vconsoles[i])
delete vconsoles[i];
}
int VConsoleDriver::char_write(minor_t minor, int c)
{
if (minor < 0 || minor >= VCONSOLE_MAX)
return -1;
if (!vconsoles[minor])
return -2;
return vconsoles[minor]->char_write(c);
}
VConsole::VConsole(int width, int height)
{
myBuffer = new u16_t[width * height];
myWidth = width;
myHeight = height;
myAttribute = myForeground = 0x07;
memsetw(myBuffer, 0x0720, width * height);
myCursorPosition = 0;
myCursorStackPosition = myEscapeLevel = myEscapePosition = myBackground =
myBold = myReverse = myBlink = myConcealed = myActive = 0;
}
VConsole::~VConsole()
{
delete[] myBuffer;
}
void VConsole::activate()
{
myActive = 1;
}
void VConsole::deactivate()
{
myActive = 0;
}
int VConsole::char_write(int c)
{
int cursorY = myCursorPosition / myWidth;
int cursorX = myCursorPosition % myWidth;
switch (myEscapeLevel)
{
case 2:
if (c >= '0' && c <= '9') // c is part of an escape value
{
myEscapeValue[myEscapePosition] *= 10;
myEscapeValue[myEscapePosition] += c - '0';
return 0;
}
else if (c == ';')
{
if (myEscapePosition < 7)
myEscapePosition++;
return 0;
}
switch (c)
{
case 'A': // move cursor up n rows
update_cursor_coord(cursorY - myEscapeValue[0], cursorX);
break;
case 'B': // move cursor down n rows
update_cursor_coord(cursorY + myEscapeValue[0], cursorX);
break;
case 'C': // move cursor left n columns
update_cursor_coord(cursorY, cursorX - myEscapeValue[0]);
break;
case 'D': // move cursor right n columns
update_cursor_coord(cursorY, cursorX + myEscapeValue[0]);
break;
case 'H':
case 'f': // move cursor to position (x,y) upper left is (1,1)
update_cursor_coord(myEscapeValue[1] - 1, myEscapeValue[0] - 1);
break;
case 'J': // clear screen, home cursor
memsetw(myBuffer, 0x0720, myWidth * myHeight);
// vconsole_draw(id);
update_cursor_coord(0, 0);
break;
case 'K': // erase line from cursor position (including char. under cursor) to end of line
memsetw(myBuffer + myCursorPosition, 0x0720, myWidth - cursorX);
// vconsole_draw(id);
break;
case 's': // push cursor position on an internal stack
if (myCursorStackPosition < 16)
myCursorStack[myCursorStackPosition++] = myCursorPosition;
break;
case 'u': // pop cursor position from stack
if (myCursorStackPosition > 0)
update_cursor(myCursorStack[--myCursorStackPosition]);
break;
case 'm': // set text attributes
for (int evalEscapePosition = 0; evalEscapePosition <= myEscapePosition; evalEscapePosition++)
{
switch (myEscapeValue[evalEscapePosition])
{
case 0:
myForeground = 0x07;
myBackground = myConcealed = myReverse = myBlink = myBold = 0;
update_attribute();
break;
case 1:
myBold = 1;
update_attribute();
break;
case 5:
myBlink = 1;
update_attribute();
break;
case 7:
myReverse = 1;
update_attribute();
break;
case 30: case 31: case 32: case 33: case 34: case 35: case 36: case 37:
myForeground = ansi2vgaAttr[myEscapeValue[evalEscapePosition] - 30];
update_attribute();
break;
case 40: case 41: case 42: case 43: case 44: case 45: case 46: case 47:
myBackground = ansi2vgaAttr[myEscapeValue[evalEscapePosition] - 40];
update_attribute();
break;
}
}
myEscapePosition = 0;
break;
}
memsetd(myEscapeValue, 0, 8);
myEscapePosition = 0;
myEscapeLevel = 0;
return 0;
case 1:
if (c == '[')
myEscapeLevel = 2;
break;
myEscapeLevel = 0;
return 0; // invalid escape sequence
default:
if (c == '\e')
{
myEscapeLevel = 1;
return 0;
}
put_char(c);
}
return 0;
}
void VConsole::put_char(int c)
{
if (!myConcealed)
{
switch (c)
{
case '\t':
if (myCursorPosition % 8)
update_cursor(myCursorPosition + (8 - (myCursorPosition % 8)));
else
update_cursor(myCursorPosition + 8);
break;
case '\n':
if (myCursorPosition % myWidth)
update_cursor(myCursorPosition + (myWidth - (myCursorPosition % myWidth)));
else
update_cursor(myCursorPosition + myWidth);
break;
default:
myBuffer[myCursorPosition] = c | (myAttribute << 8);
// if (myActive)
// display_console_put_char(c | (myAttribute << 8), myCursorPosition);
update_cursor(myCursorPosition + 1);
}
}
}
void VConsole::update_cursor_coord(int y, int x)
{
if (y < 0)
y = 0;
else if (y >= myHeight)
y = myHeight - 1;
if (x < 0)
x = 0;
else if (x >= myWidth)
x = myWidth - 1;
update_cursor(myWidth * y + x);
}
void VConsole::update_cursor(u16_t position)
{
myCursorPosition = position;
if (position >= (myWidth * myHeight)) // time to scroll console
{
int i;
for (i = 0; i < myCursorStackPosition; i++)
{
myCursorStack[i] -= myWidth;
if (myCursorStack[i] < 0)
myCursorStack[i] = 0;
}
myCursorPosition -= myWidth;
memcpyw(myBuffer, myBuffer + myWidth, myWidth * (myHeight - 1));
memsetw(myBuffer + (myWidth * (myHeight - 1)), 0x0720, myWidth);
// if (myActive)
// {
// vconsole_draw(id);
// return;
// }
}
// if (myActive)
// display_console_update_cursor(id, position);
}
void VConsole::update_attribute()
{
if (myReverse)
myAttribute = myBlink << 7 | myForeground << 4 | myBold << 3 | myBackground;
else
myAttribute = myBlink << 7 | myBackground << 4 | myBold << 3 | myForeground;
}

80
kernel/char/vconsole.h
View File

@ -1,42 +1,72 @@
// vconsole.h // vconsole.h
// Author: Josh Holtrop // Author: Josh Holtrop
// Date: 08/02/04 // Date: 08/02/04
// Modified: 08/07/04 // Modified: 05/11/05
#ifndef __HOS_VCONSOLE__ #ifndef __HOS_VCONSOLE__
#define __HOS_VCONSOLE__ __HOS_VCONSOLE__ #define __HOS_VCONSOLE__ __HOS_VCONSOLE__
#define VCONSOLE_MAX 7
#ifdef _HOS_CPP_
extern "C" {
#endif
#include "hos_defines.h" #include "hos_defines.h"
#include "fs/devices.h"
#define VCONSOLE_MAX 16 void vconsole_setup(int width, int height);
typedef struct #ifdef _HOS_CPP_
}
#include "devices.h"
class VConsoleDriver : public DeviceDriver
{ {
u16_t *buffer; public:
u32_t escapeValue[8]; ~VConsoleDriver();
u16_t cursorPosition; int char_write(minor_t minor, int c);
u16_t width; };
u16_t height;
short cursorStack[16];
u8_t attribute; class VConsole
u8_t foreground; {
u8_t background; protected:
u8_t bold; u16_t *myBuffer;
u8_t reverse; u16_t myWidth;
u8_t blink; u16_t myHeight;
u8_t concealed; u16_t myCursorPosition;
u8_t cursorStackPosition; short myCursorStack[16];
u8_t escapeLevel; u8_t myCursorStackPosition;
u8_t escapePosition;
} vconsole_t;
int vconsole_init(major_t major); u32_t myEscapeValue[8];
minor_t vconsole_new(int width, int height); u8_t myEscapeLevel;
int vconsole_draw(minor_t id); u8_t myEscapePosition;
int vconsole_char_write(minor_t id, int c);
u8_t myAttribute;
u8_t myForeground;
u8_t myBackground;
u8_t myBold;
u8_t myReverse;
u8_t myBlink;
u8_t myConcealed;
u8_t myActive;
public:
VConsole(int width, int height);
~VConsole();
int char_read();
int char_write(int c);
void put_char(int c);
void update_cursor(u16_t position);
void update_cursor_coord(int y, int x);
void update_attribute();
void activate();
void deactivate();
};
#endif
#endif #endif

65
kernel/devices.cpp Normal file
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@ -0,0 +1,65 @@
// devices.cpp
// Device subsystem for HOS
// Author: Josh Holtrop
// Date: 05/11/05
// Modified: 05/11/05
#define _HOS_CPP_ _HOS_CPP_
#include "hos_defines.h"
#include "devices.h"
#include "char/misc_char.h"
#include "char/vconsole.h"
DeviceDriver *drivers[256];
int devices_init()
{
drivers[MAJOR_MISC_CHAR] = new MiscChar();
drivers[MAJOR_VCONSOLE] = new VConsoleDriver();
return 0;
}
int block_read(major_t major, minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
{
if (drivers[major & 0xFF])
return drivers[major & 0xFF]->block_read(minor, blockStart, blocks, buffer);
return DEV_INVALID_DEVICE;
}
int block_write(major_t major, minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
{
if (drivers[major & 0xFF])
return drivers[major & 0xFF]->block_write(minor, blockStart, blocks, buffer);
return DEV_INVALID_DEVICE;
}
int char_read(major_t major, minor_t minor)
{
if (drivers[major & 0xFF])
return drivers[major & 0xFF]->char_read(minor);
return DEV_INVALID_DEVICE;
}
int char_write(major_t major, minor_t minor, int c)
{
if (drivers[major & 0xFF])
return drivers[major & 0xFF]->char_write(minor, c);
return DEV_INVALID_DEVICE;
}
DeviceDriver::DeviceDriver() {}
DeviceDriver::~DeviceDriver() {}
int DeviceDriver::char_read(minor_t minor)
{ return DEV_INVALID_ACCESS; }
int DeviceDriver::char_write(minor_t minor, int c)
{ return DEV_INVALID_ACCESS; }
int DeviceDriver::block_read(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
{ return DEV_INVALID_ACCESS; }
int DeviceDriver::block_write(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
{ return DEV_INVALID_ACCESS; }

54
kernel/devices.h Normal file
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@ -0,0 +1,54 @@
// devices.h
// Device subsystem for HOS
// Author: Josh Holtrop
// Date: 05/11/05
// Modified: 05/11/05
#ifndef __HOS_DEVICES_H__
#define __HOS_DEVICES_H__ __HOS_DEVICES_H__
#include "hos_defines.h"
#define DEV_INVALID_ACCESS -256
#define DEV_INVALID_DEVICE -257
#define DEV_EOF -1
#define MAJOR_MISC_CHAR 1
#define MAJOR_RAMDISK 2
#define MAJOR_VCONSOLE 4
#define BLOCK_SIZE 512
#define BLOCK_SIZE_LOG 9
typedef short major_t;
typedef short minor_t;
typedef u32_t device_t;
#ifdef _HOS_CPP_
extern "C" {
#endif
int devices_init();
int block_read(major_t major, minor_t minor, u32_t blockStart, u32_t blocks, void *buffer);
int block_write(major_t major, minor_t minor, u32_t blockStart, u32_t blocks, void *buffer);
int char_read(major_t major, minor_t minor);
int char_write(major_t major, minor_t minor, int c);
#ifdef _HOS_CPP_
}
class DeviceDriver
{
public:
DeviceDriver();
virtual ~DeviceDriver();
virtual int char_read(minor_t minor);
virtual int char_write(minor_t minor, int c);
virtual int block_read(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer);
virtual int block_write(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer);
};
#endif
#endif

27
kernel/display/display.c
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@ -3,7 +3,7 @@
// Date: 08/07/04 // Date: 08/07/04
// Modified: 03/19/05 // Modified: 03/19/05
#include "fs/devices.h" #include "devices.h"
#include "char/vconsole.h" #include "char/vconsole.h"
#include "display.h" #include "display.h"
#include "lang/lang.h" #include "lang/lang.h"
@ -17,7 +17,6 @@ display_t myDisplays[12]; // f1-f12 change displays
// initialization routine for display subsystem // initialization routine for display subsystem
int display_init() int display_init()
{ {
minor_t vc;
int width = 80; int width = 80;
int height = 25; int height = 25;
int displayType = DISPLAY_CONSOLE; int displayType = DISPLAY_CONSOLE;
@ -28,25 +27,9 @@ int display_init()
height = vesafb_getHeight(); height = vesafb_getHeight();
displayType = DISPLAY_FB; displayType = DISPLAY_FB;
} }
if (( vc = vconsole_new(width, height) )) vconsole_setup(width, height);
{ // vconsole_activate(0);
myDisplays[11].type = displayType;
myDisplays[11].id = vc;
display_activeConsole = vc;
}
else
return -1;
int i;
for (i = 0; i < 6; i++)
{
if ((vc = vconsole_new(width, height)))
{
myDisplays[i].type = displayType;
myDisplays[i].id = vc;
}
else
return -2 - i;
}
return 0; return 0;
} }
@ -61,7 +44,7 @@ int display_activate(u32_t id)
case DISPLAY_CONSOLE: case DISPLAY_CONSOLE:
case DISPLAY_FB: case DISPLAY_FB:
display_activeConsole = myDisplays[id].id; display_activeConsole = myDisplays[id].id;
return vconsole_draw(display_activeConsole); // return vconsole_draw(display_activeConsole);
case DISPLAY_GRAPHICAL: case DISPLAY_GRAPHICAL:
default: default:
return -2; return -2;

2
kernel/display/display.h
View File

@ -7,7 +7,7 @@
#define __HOS_CONSOLE__ __HOS_CONSOLE__ #define __HOS_CONSOLE__ __HOS_CONSOLE__
#include "hos_defines.h" #include "hos_defines.h"
#include "fs/devices.h" #include "devices.h"
#define DISPLAY_NULL 0 #define DISPLAY_NULL 0
#define DISPLAY_CONSOLE 1 #define DISPLAY_CONSOLE 1

7
kernel/display/kout.c
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@ -6,7 +6,8 @@
#include "hos_defines.h" #include "hos_defines.h"
#include "kout.h" #include "kout.h"
#include "lang/conv.h" #include "lang/conv.h"
#include "fs/devices.h" #include "devices.h"
#include "char/misc_char.h"
char buffer[64]; // for hex/oct/dec/ascii conversion char buffer[64]; // for hex/oct/dec/ascii conversion
@ -14,9 +15,9 @@ char buffer[64]; // for hex/oct/dec/ascii conversion
void putc(int c) void putc(int c)
{ {
#ifdef PARALLEL_DEBUG #ifdef PARALLEL_DEBUG
char_write(MAJORC_PARALLEL, 0, c); char_write(MAJOR_MISC_CHAR, MISC_CHAR_LP0, c);
#endif #endif
char_write(MAJORC_VCONSOLE, 1, c); // write to vconsole with minor 1, first allocated char_write(MAJOR_VCONSOLE, 1, c); // write to vconsole with minor 1, first allocated
} }

18
kernel/fs/devfs.c
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@ -1,18 +0,0 @@
// devfs.c
// Author: Josh Holtrop
// Date: 08/22/04
// Modified: 08/22/04
#include "hos_defines.h"
#include "fs/devfs.h"
#include "fs/devices.h"
#include "fs/vfs.h"
#include "block/ramdisk.h"
int devfs_init()
{
return 0;
}

15
kernel/fs/devfs.h
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@ -1,15 +0,0 @@
// devfs.h
// Author: Josh Holtrop
// Date: 08/22/04
// Modified: 08/22/04
#ifndef __HOS_DEVFS_H__
#define __HOS_DEVFS_H__ __HOS_DEVFS_H__
#include "hos_defines.h"
#include "fs/devices.h"
int devfs_init();
#endif

0
kernel/fs/devices.c → kernel/fs/devices_old.c
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0
kernel/fs/devices.h → kernel/fs/devices_old.h
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6
kernel/fs/ext2.cpp Normal file
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@ -0,0 +1,6 @@
// ext2.cpp
// ext2 filesystem driver for HOS
// Author: Josh Holtrop
// Date: 05/10/05
// Modified: 05/10/05

238
kernel/fs/ext2.h
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@ -1,241 +1,21 @@
// ext2.h // ext2.h
// ext2 filesystem driver for HOS
// Author: Josh Holtrop // Author: Josh Holtrop
// Date: 08/22/04 // Date: 05/10/05
// Modified: 12/24/04 // Modified: 05/10/05
#ifndef __HOS_EXT2_H__ #ifndef __HOS_EXT2_H__
#define __HOS_EXT2_H__ __HOS_EXT2_H__ #define __HOS_EXT2_H__ __HOS_EXT2_H__
#include "hos_defines.h" #include "vfs.h"
#include "fs/devices.h"
#include "fs/vfs.h"
#define EXT2_MAGIC 0xEF53 #ifdef _HOS_CPP_
#define EXT2_NAME_LEN 255
#define EXT2_I_MODE_ATTR_MASK 0x0FFF class Ext2 : public FileSystem
#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
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 */ #endif
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;
typedef struct
{
ext2_inode_t inode;
u32_t block;
u32_t *block_pointers;
u32_t block_pointers_start;
} ext2_open_inode_t;
typedef struct
{
ext2_open_inode_t *open_inode;
u32_t position;
} ext2_open_dir_t;
typedef struct
{
ext2_open_inode_t *open_inode;
u32_t position;
u32_t buffer_start;
u32_t buffer_bytes;
u8_t *buffer;
} ext2__open_file_t;
typedef struct
{
ext2_open_inode_t *open_inode;
u32_t block;
} ext2__open_block_file_t;
static inline u32_t ext2_diskToFSBlock(u32_t block, ext2_super_block_t *super)
{
// convert # of disk blocks to # of filesystem blocks
return block >> (super->s_log_block_size + 1);
}
static inline u32_t ext2_FSToDiskBlock(u32_t block, ext2_super_block_t *super)
{
// convert # of filesystem blocks to # of disk blocks
return block << (super->s_log_block_size + 1);
}
int ext2_init(int fsID);
int ext2_read_inode(vfs_mount_t *mount, u32_t inode, ext2_inode_t *dat);
int ext2_write_inode(vfs_mount_t *mount, u32_t inode, ext2_inode_t *dat);
ext2_group_desc_t ext2_get_group_desc(vfs_mount_t *mount, u32_t group);
void ext2_write_group_desc(vfs_mount_t *mount, u32_t group_num, ext2_group_desc_t *gd);
ext2_open_inode_t *ext2_open_inode(vfs_mount_t *mount, u32_t inode_number);
int ext2_close_inode(vfs_mount_t *mount, ext2_open_inode_t *open_inode);
int ext2_read_inode_block(vfs_mount_t *mount, ext2_open_inode_t *open_inode, void *block);
u32_t ext2_block_number(vfs_mount_t *mount, ext2_open_inode_t *open_inode);
int ext2_inode_seek(vfs_mount_t *mount, ext2_open_inode_t *open_inode, u32_t block_number);
int ext2_inode_status(vfs_mount_t *mount, u32_t inode_number);
int ext2_block_status(vfs_mount_t *mount, u32_t block_number);
u32_t ext2_alloc_inode(vfs_mount_t *mount);
int ext2_free_inode(vfs_mount_t *mount, u32_t inode_number);
u32_t ext2_alloc_block(vfs_mount_t *mount);
int ext2_free_block(vfs_mount_t *mount, u32_t block_number);
u32_t ext2_reserve_node(vfs_mount_t *mount, u32_t bitmap_block_num, u32_t bitmap_size);
int ext2_free_node(vfs_mount_t *mount, u32_t bitmap_block_num, u32_t node_number);
int ext2_num_block_groups(ext2_super_block_t *super);
void ext2_write_super(vfs_mount_t *mount);
int ext2_resize_inode(vfs_mount_t *mount, u32_t inode_number, u32_t new_size);
ext2_open_dir_t *ext2_open_dir(vfs_mount_t *mount, u32_t inode_number);
int ext2_dir_read_entry(vfs_mount_t *mount, ext2_open_dir_t *open_dir, ext2_dir_entry_t *dentry);
int ext2_close_dir(vfs_mount_t *mount, ext2_open_dir_t *open_dir);
int ext2_dir_lookup(vfs_mount_t *mount, u32_t dir_inode, char *fileName, ext2_dir_entry_t *direntry);
void *ext2_mount_super(major_t major, minor_t minor);
int ext2_umount_super(vfs_mount_t *mount);
int ext2_stat(vfs_mount_t *mount, u32_t inode_number, vfs_stat_t *stat);
u32_t ext2__get_root_dir_inode(vfs_mount_t *mount);
int ext2__link_deref(vfs_mount_t *mount, u32_t link_inode, char *link);
int ext2__free_inodes(vfs_mount_t *mount);
int ext2__total_inodes(vfs_mount_t *mount);
int ext2__free_blocks(vfs_mount_t *mount);
int ext2__total_blocks(vfs_mount_t *mount);
int ext2__open_dir(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *dir);
int ext2__read_dir(vfs_mount_t *mount, vfs_open_file_t *dir, vfs_dir_entry_t *dentry);
int ext2__close_dir(vfs_mount_t *mount, vfs_open_file_t *dir);
int ext2__open_file(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *open_file);
int ext2__read_file(vfs_mount_t *mount, vfs_open_file_t *open_file);
int ext2__close_file(vfs_mount_t *mount, vfs_open_file_t *open_file);
int ext2__open_block_file(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *open_file);
int ext2__read_block_file(vfs_mount_t *mount, vfs_open_file_t *open_file, void *buffer);
int ext2__block_file_seek(vfs_mount_t *mount, vfs_open_file_t *open_file, u32_t block_number);
int ext2__close_block_file(vfs_mount_t *mount, vfs_open_file_t *open_file);
#endif #endif

0
kernel/fs/ext2.c → kernel/fs/ext2_old.c
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241
kernel/fs/ext2_old.h Normal file
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@ -0,0 +1,241 @@
// ext2.h
// Author: Josh Holtrop
// Date: 08/22/04
// Modified: 12/24/04
#ifndef __HOS_EXT2_H__
#define __HOS_EXT2_H__ __HOS_EXT2_H__
#include "hos_defines.h"
#include "fs/devices.h"
#include "fs/vfs.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
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;
typedef struct
{
ext2_inode_t inode;
u32_t block;
u32_t *block_pointers;
u32_t block_pointers_start;
} ext2_open_inode_t;
typedef struct
{
ext2_open_inode_t *open_inode;
u32_t position;
} ext2_open_dir_t;
typedef struct
{
ext2_open_inode_t *open_inode;
u32_t position;
u32_t buffer_start;
u32_t buffer_bytes;
u8_t *buffer;
} ext2__open_file_t;
typedef struct
{
ext2_open_inode_t *open_inode;
u32_t block;
} ext2__open_block_file_t;
static inline u32_t ext2_diskToFSBlock(u32_t block, ext2_super_block_t *super)
{
// convert # of disk blocks to # of filesystem blocks
return block >> (super->s_log_block_size + 1);
}
static inline u32_t ext2_FSToDiskBlock(u32_t block, ext2_super_block_t *super)
{
// convert # of filesystem blocks to # of disk blocks
return block << (super->s_log_block_size + 1);
}
int ext2_init(int fsID);
int ext2_read_inode(vfs_mount_t *mount, u32_t inode, ext2_inode_t *dat);
int ext2_write_inode(vfs_mount_t *mount, u32_t inode, ext2_inode_t *dat);
ext2_group_desc_t ext2_get_group_desc(vfs_mount_t *mount, u32_t group);
void ext2_write_group_desc(vfs_mount_t *mount, u32_t group_num, ext2_group_desc_t *gd);
ext2_open_inode_t *ext2_open_inode(vfs_mount_t *mount, u32_t inode_number);
int ext2_close_inode(vfs_mount_t *mount, ext2_open_inode_t *open_inode);
int ext2_read_inode_block(vfs_mount_t *mount, ext2_open_inode_t *open_inode, void *block);
u32_t ext2_block_number(vfs_mount_t *mount, ext2_open_inode_t *open_inode);
int ext2_inode_seek(vfs_mount_t *mount, ext2_open_inode_t *open_inode, u32_t block_number);
int ext2_inode_status(vfs_mount_t *mount, u32_t inode_number);
int ext2_block_status(vfs_mount_t *mount, u32_t block_number);
u32_t ext2_alloc_inode(vfs_mount_t *mount);
int ext2_free_inode(vfs_mount_t *mount, u32_t inode_number);
u32_t ext2_alloc_block(vfs_mount_t *mount);
int ext2_free_block(vfs_mount_t *mount, u32_t block_number);
u32_t ext2_reserve_node(vfs_mount_t *mount, u32_t bitmap_block_num, u32_t bitmap_size);
int ext2_free_node(vfs_mount_t *mount, u32_t bitmap_block_num, u32_t node_number);
int ext2_num_block_groups(ext2_super_block_t *super);
void ext2_write_super(vfs_mount_t *mount);
int ext2_resize_inode(vfs_mount_t *mount, u32_t inode_number, u32_t new_size);
ext2_open_dir_t *ext2_open_dir(vfs_mount_t *mount, u32_t inode_number);
int ext2_dir_read_entry(vfs_mount_t *mount, ext2_open_dir_t *open_dir, ext2_dir_entry_t *dentry);
int ext2_close_dir(vfs_mount_t *mount, ext2_open_dir_t *open_dir);
int ext2_dir_lookup(vfs_mount_t *mount, u32_t dir_inode, char *fileName, ext2_dir_entry_t *direntry);
void *ext2_mount_super(major_t major, minor_t minor);
int ext2_umount_super(vfs_mount_t *mount);
int ext2_stat(vfs_mount_t *mount, u32_t inode_number, vfs_stat_t *stat);
u32_t ext2__get_root_dir_inode(vfs_mount_t *mount);
int ext2__link_deref(vfs_mount_t *mount, u32_t link_inode, char *link);
int ext2__free_inodes(vfs_mount_t *mount);
int ext2__total_inodes(vfs_mount_t *mount);
int ext2__free_blocks(vfs_mount_t *mount);
int ext2__total_blocks(vfs_mount_t *mount);
int ext2__open_dir(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *dir);
int ext2__read_dir(vfs_mount_t *mount, vfs_open_file_t *dir, vfs_dir_entry_t *dentry);
int ext2__close_dir(vfs_mount_t *mount, vfs_open_file_t *dir);
int ext2__open_file(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *open_file);
int ext2__read_file(vfs_mount_t *mount, vfs_open_file_t *open_file);
int ext2__close_file(vfs_mount_t *mount, vfs_open_file_t *open_file);
int ext2__open_block_file(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *open_file);
int ext2__read_block_file(vfs_mount_t *mount, vfs_open_file_t *open_file, void *buffer);
int ext2__block_file_seek(vfs_mount_t *mount, vfs_open_file_t *open_file, u32_t block_number);
int ext2__close_block_file(vfs_mount_t *mount, vfs_open_file_t *open_file);
#endif

16
kernel/fs/vfs.cpp Normal file
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@ -0,0 +1,16 @@
// vfs.cpp
// Virtual file system subsystem for HOS
// Author: Josh Holtrop
// Date: 05/10/05
// Modified: 05/10/05
#define _HOS_CPP_ _HOS_CPP_
#include "hos_defines.h"
#include "vfs.h"
int vfs_init()
{
return 0;
}

171
kernel/fs/vfs.h
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@ -1,168 +1,29 @@
// vfs.h // vfs.h
// Virtual file system subsystem for HOS
// Author: Josh Holtrop // Author: Josh Holtrop
// Date: 08/22/04 // Date: 05/10/05
// Modified: 12/21/04 // Modified: 05/10/05
#ifndef __HOS_VFS_H__ #ifndef __HOS_VFS_H__
#define __HOS_VFS_H__ __HOS_VFS_H__ #define __HOS_VFS_H__ __HOS_VFS_H__
#include "hos_defines.h" #ifdef _HOS_CPP_
#include "fs/devices.h" extern "C" {
#endif
#define FS_EXT2 1
#define VFS_MAX_FS 10
#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
typedef u64_t vfs_inode_t;
/* Structure to hold information about a mount point */
struct vfs_mount_s
{
int refs;
void *super;
int fs;
major_t major;
minor_t minor;
char *mountPoint;
vfs_inode_t vfs_mount_inode;
vfs_inode_t vfs_up_inode;
vfs_inode_t vfs_root_inode;
struct vfs_mount_s *next;
struct vfs_mount_s *prev;
};
typedef struct vfs_mount_s vfs_mount_t;
typedef struct
{
u16_t type; // file type, of VFS_FILE_TYPE_*
u32_t size;
u32_t inode;
u16_t permissions;
u16_t uid;
u16_t gid;
u32_t atime;
u32_t mtime;
u32_t ctime;
u16_t links;
u32_t dev;
} vfs_stat_t;
typedef struct
{
vfs_mount_t *mount;
void *fs_data;
} vfs_open_file_t;
typedef struct
{
char name[257];
u32_t inode_number; // relative inode number returned from fs
} vfs_dir_entry_t;
typedef struct
{
vfs_mount_t *mount;
u32_t inode;
} vfs_file_addr_t;
/* Every filesystem must provide pointers to its respective functions in a structure like this */
typedef struct
{
void *(*mount_super)(major_t major, minor_t minor);
int (*umount_super)(vfs_mount_t *mount);
int (*stat)(vfs_mount_t *mount, u32_t inode_number, vfs_stat_t *stat);
u32_t (*get_root_inode)(vfs_mount_t *mount);
int (*link_deref)(vfs_mount_t *mount, u32_t inode_number, char *link);
int (*free_inodes)(vfs_mount_t *mount);
int (*total_inodes)(vfs_mount_t *mount);
int (*free_blocks)(vfs_mount_t *mount);
int (*total_blocks)(vfs_mount_t *mount);
u32_t (*alloc_inode)(vfs_mount_t *mount);
int (*free_inode)(vfs_mount_t *mount, u32_t inode_number);
u32_t (*alloc_block)(vfs_mount_t *mount);
int (*free_block)(vfs_mount_t *mount, u32_t block_number);
int (*open_dir)(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *dir);
int (*read_dir)(vfs_mount_t *mount, vfs_open_file_t *dir, vfs_dir_entry_t *dentry);
int (*close_dir)(vfs_mount_t *mount, vfs_open_file_t *dir);
int (*open_file)(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *open_file);
int (*read_file)(vfs_mount_t *mount, vfs_open_file_t *open_file);
int (*close_file)(vfs_mount_t *mount, vfs_open_file_t *open_file);
int (*open_block_file)(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *open_file);
int (*read_block_file)(vfs_mount_t *mount, vfs_open_file_t *open_file, void *buffer);
int (*block_file_seek)(vfs_mount_t *mount, vfs_open_file_t *open_file, u32_t block_number);
int (*close_block_file)(vfs_mount_t *mount, vfs_open_file_t *open_file);
} vfs_fs_t;
int vfs_init(); int vfs_init();
int vfs_mount(major_t maj, minor_t min, int fsType, char *mountPoint);
int vfs_umount(char *mountPoint);
int vfs_register_fs(int fsn, vfs_fs_t *fs);
int vfs_umount(char *mountPoint);
vfs_inode_t vfs_get_inode_number(char *path);
vfs_inode_t vfs_get_inode_number_rel(vfs_inode_t dir_inode, char *path);
vfs_inode_t vfs_real_inode(vfs_inode_t vfs_inode);
vfs_file_addr_t vfs_get_file_addr(vfs_inode_t vfs_inode);
vfs_inode_t vfs_entry_lookup(vfs_inode_t dir_inode, char *entry);
int vfs_mount_count(); #ifdef _HOS_CPP_
vfs_mount_t *vfs_get_mount(int index); }
int vfs_free_inodes(vfs_mount_t *mount);
int vfs_total_inodes(vfs_mount_t *mount);
int vfs_free_blocks(vfs_mount_t *mount);
int vfs_total_blocks(vfs_mount_t *mount);
/* Temporary for debugging */
vfs_inode_t vfs_alloc_inode(vfs_mount_t *mount);
int vfs_free_inode(vfs_mount_t *mount, u32_t inode_number);
u32_t vfs_alloc_block(vfs_mount_t *mount);
int vfs_free_block(vfs_mount_t *mount, u32_t block_number);
int vfs_link_deref(vfs_inode_t vfs_inode, char *link);
int vfs_stat(char *file, vfs_stat_t *stat);
int vfs_stat_inode(vfs_inode_t vfs_inode, vfs_stat_t *stat);
vfs_open_file_t *vfs_open_dir(char *path);
vfs_open_file_t *vfs_open_dir_inode(vfs_inode_t inode);
int vfs_read_dir(vfs_open_file_t *open_dir, vfs_dir_entry_t *dentry);
int vfs_close_dir(vfs_open_file_t *open_dir);
vfs_open_file_t *vfs_open_block_file(char *file);
vfs_open_file_t *vfs_open_block_file_inode(vfs_inode_t vfs_inode);
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);
class FileSystem
{
public:
FileSystem();
~FileSystem();
};
#endif
#endif #endif

31
kernel/fs/vfs.c → kernel/fs/vfs_old.cpp
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@ -1,8 +1,12 @@
// vfs.c // vfs.cpp
// Author: Josh Holtrop // Author: Josh Holtrop
// Date: 08/22/04 // Date: 08/22/04
// Modified: 12/21/04 // Modified: 12/21/04
#define _HOS_CPP_ _HOS_CPP_
extern "C"
{
#include "hos_defines.h" #include "hos_defines.h"
#include "display/kout.h" #include "display/kout.h"
#include "fs/vfs.h" #include "fs/vfs.h"
@ -10,6 +14,8 @@
#include "kernel.h" #include "kernel.h"
#include "mm/vmm.h" #include "mm/vmm.h"
#include "lang/lang.h" #include "lang/lang.h"
}
vfs_fs_t *fses[VFS_MAX_FS]; // a vfs_fs structure for every filesystem we support vfs_fs_t *fses[VFS_MAX_FS]; // a vfs_fs structure for every filesystem we support
vfs_mount_t *mounts; vfs_mount_t *mounts;
@ -18,9 +24,16 @@ vfs_mount_t *mounts;
int vfs_init() int vfs_init()
{ {
k_check(ext2_init(FS_EXT2), "ext2_init() failed!"); k_check(ext2_init(FS_EXT2), "ext2_init() failed!");
FileSystem fs;
FileSystem *ext2 = new Ext2();
FileSystem *jfs = new JoshsFS();
fs.out();
ext2->out();
jfs->out();
return 0; return 0;
} }
// called by a filesystem driver to let us know that it is ready to handle fs requests // called by a filesystem driver to let us know that it is ready to handle fs requests
int vfs_register_fs(int fsn, vfs_fs_t *fs) int vfs_register_fs(int fsn, vfs_fs_t *fs)
{ {
@ -45,7 +58,7 @@ int vfs_mount(major_t maj, minor_t min, int fsType, char *mountPoint)
void *super = fses[fsType]->mount_super(maj, min); void *super = fses[fsType]->mount_super(maj, min);
if (!super) if (!super)
return -3; // didn't mount superblock return -3; // didn't mount superblock
vfs_mount_t *mnt = New(vfs_mount_t); vfs_mount_t *mnt = (vfs_mount_t *) New(vfs_mount_t);
mnt->refs = 0; mnt->refs = 0;
mnt->fs = fsType; mnt->fs = fsType;
mnt->major = maj; mnt->major = maj;
@ -53,7 +66,7 @@ int vfs_mount(major_t maj, minor_t min, int fsType, char *mountPoint)
mnt->super = super; mnt->super = super;
mnt->next = NULL; mnt->next = NULL;
mnt->prev = NULL; mnt->prev = NULL;
mnt->mountPoint = kmalloc(2); mnt->mountPoint = (char *) kmalloc(2);
strcpy(mnt->mountPoint, mountPoint); strcpy(mnt->mountPoint, mountPoint);
mnt->vfs_mount_inode = 0; // root not mounted on another fs mnt->vfs_mount_inode = 0; // root not mounted on another fs
mnt->vfs_root_inode = ((vfs_inode_t)maj << 40) | ((vfs_inode_t)min << 32) | fses[fsType]->get_root_inode(mnt); mnt->vfs_root_inode = ((vfs_inode_t)maj << 40) | ((vfs_inode_t)min << 32) | fses[fsType]->get_root_inode(mnt);
@ -77,13 +90,13 @@ int vfs_mount(major_t maj, minor_t min, int fsType, char *mountPoint)
void *super = fses[fsType]->mount_super(maj, min); void *super = fses[fsType]->mount_super(maj, min);
if (!super) if (!super)
return -3; // didn't mount superblock return -3; // didn't mount superblock
vfs_mount_t *mnt = New(vfs_mount_t); vfs_mount_t *mnt = (vfs_mount_t *) New(vfs_mount_t);
mnt->refs = 0; mnt->refs = 0;
mnt->super = super; mnt->super = super;
mnt->fs = fsType; mnt->fs = fsType;
mnt->major = maj; mnt->major = maj;
mnt->minor = min; mnt->minor = min;
mnt->mountPoint = kmalloc(strlen(mountPoint) + 1); mnt->mountPoint = (char *) kmalloc(strlen(mountPoint) + 1);
strcpy(mnt->mountPoint, mountPoint); strcpy(mnt->mountPoint, mountPoint);
mnt->vfs_mount_inode = vfs_inode; mnt->vfs_mount_inode = vfs_inode;
mnt->vfs_up_inode = updir; mnt->vfs_up_inode = updir;
@ -135,7 +148,7 @@ vfs_inode_t vfs_get_inode_number(char *path)
vfs_inode_t vfs_get_inode_number_rel(vfs_inode_t dir_inode, char *path) vfs_inode_t vfs_get_inode_number_rel(vfs_inode_t dir_inode, char *path)
{ {
char *path_copy = kmalloc(strlen(path) + 1); char *path_copy = (char *) kmalloc(strlen(path) + 1);
strcpy(path_copy, path); strcpy(path_copy, path);
int stanzas = str_split(path_copy, '/'); int stanzas = str_split(path_copy, '/');
char *lookup = path_copy; char *lookup = path_copy;
@ -149,7 +162,7 @@ vfs_inode_t vfs_get_inode_number_rel(vfs_inode_t dir_inode, char *path)
return 0x8000000000000002ULL; return 0x8000000000000002ULL;
if (stat.type == VFS_FT_SYMLINK) if (stat.type == VFS_FT_SYMLINK)
{ {
char *link = kmalloc(4096); char *link = (char *) kmalloc(4096);
vfs_link_deref(vfs_inode, link); vfs_link_deref(vfs_inode, link);
if (link[0] == '/') if (link[0] == '/')
vfs_inode = vfs_get_inode_number(link); vfs_inode = vfs_get_inode_number(link);
@ -348,7 +361,7 @@ vfs_open_file_t *vfs_open_dir(char *path)
vfs_open_file_t *vfs_open_dir_inode(vfs_inode_t vfs_inode) vfs_open_file_t *vfs_open_dir_inode(vfs_inode_t vfs_inode)
{ {
vfs_file_addr_t addr = vfs_get_file_addr(vfs_inode); vfs_file_addr_t addr = vfs_get_file_addr(vfs_inode);
vfs_open_file_t *open_dir = New(vfs_open_file_t); vfs_open_file_t *open_dir = (vfs_open_file_t *) New(vfs_open_file_t);
if (fses[addr.mount->fs]->open_dir && !(fses[addr.mount->fs]->open_dir(addr.mount, addr.inode, open_dir))) if (fses[addr.mount->fs]->open_dir && !(fses[addr.mount->fs]->open_dir(addr.mount, addr.inode, open_dir)))
{ {
open_dir->mount = addr.mount; open_dir->mount = addr.mount;
@ -384,7 +397,7 @@ vfs_open_file_t *vfs_open_block_file(char *path)
vfs_open_file_t *vfs_open_block_file_inode(vfs_inode_t vfs_inode) vfs_open_file_t *vfs_open_block_file_inode(vfs_inode_t vfs_inode)
{ {
vfs_file_addr_t addr = vfs_get_file_addr(vfs_inode); vfs_file_addr_t addr = vfs_get_file_addr(vfs_inode);
vfs_open_file_t *open_file = New(vfs_open_file_t); vfs_open_file_t *open_file = (vfs_open_file_t *) New(vfs_open_file_t);
if (fses[addr.mount->fs]->open_block_file && !(fses[addr.mount->fs]->open_block_file(addr.mount, addr.inode, open_file))) if (fses[addr.mount->fs]->open_block_file && !(fses[addr.mount->fs]->open_block_file(addr.mount, addr.inode, open_file)))
{ {
open_file->mount = addr.mount; open_file->mount = addr.mount;

218
kernel/fs/vfs_old.h Normal file
View File

@ -0,0 +1,218 @@
// vfs.h
// Author: Josh Holtrop
// Date: 08/22/04
// Modified: 12/21/04
#ifndef __HOS_VFS_H__
#define __HOS_VFS_H__ __HOS_VFS_H__
#include "hos_defines.h"
#include "fs/devices.h"
#define FS_EXT2 1
#define VFS_MAX_FS 10
#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
typedef u64_t vfs_inode_t;
/* Structure to hold information about a mount point */
struct vfs_mount_s
{
int refs;
void *super;
int fs;
major_t major;
minor_t minor;
char *mountPoint;
vfs_inode_t vfs_mount_inode;
vfs_inode_t vfs_up_inode;
vfs_inode_t vfs_root_inode;
struct vfs_mount_s *next;
struct vfs_mount_s *prev;
};
typedef struct vfs_mount_s vfs_mount_t;
typedef struct
{
u16_t type; // file type, of VFS_FILE_TYPE_*
u32_t size;
u32_t inode;
u16_t permissions;
u16_t uid;
u16_t gid;
u32_t atime;
u32_t mtime;
u32_t ctime;
u16_t links;
u32_t dev;
} vfs_stat_t;
typedef struct
{
vfs_mount_t *mount;
void *fs_data;
} vfs_open_file_t;
typedef struct
{
char name[257];
u32_t inode_number; // relative inode number returned from fs
} vfs_dir_entry_t;
typedef struct
{
vfs_mount_t *mount;
u32_t inode;
} vfs_file_addr_t;
/* Every filesystem must provide pointers to its respective functions in a structure like this */
typedef struct
{
void *(*mount_super)(major_t major, minor_t minor);
int (*umount_super)(vfs_mount_t *mount);
int (*stat)(vfs_mount_t *mount, u32_t inode_number, vfs_stat_t *stat);
u32_t (*get_root_inode)(vfs_mount_t *mount);
int (*link_deref)(vfs_mount_t *mount, u32_t inode_number, char *link);
int (*free_inodes)(vfs_mount_t *mount);
int (*total_inodes)(vfs_mount_t *mount);
int (*free_blocks)(vfs_mount_t *mount);
int (*total_blocks)(vfs_mount_t *mount);
u32_t (*alloc_inode)(vfs_mount_t *mount);
int (*free_inode)(vfs_mount_t *mount, u32_t inode_number);
u32_t (*alloc_block)(vfs_mount_t *mount);
int (*free_block)(vfs_mount_t *mount, u32_t block_number);
int (*open_dir)(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *dir);
int (*read_dir)(vfs_mount_t *mount, vfs_open_file_t *dir, vfs_dir_entry_t *dentry);
int (*close_dir)(vfs_mount_t *mount, vfs_open_file_t *dir);
int (*open_file)(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *open_file);
int (*read_file)(vfs_mount_t *mount, vfs_open_file_t *open_file);
int (*close_file)(vfs_mount_t *mount, vfs_open_file_t *open_file);
int (*open_block_file)(vfs_mount_t *mount, u32_t inode_number, vfs_open_file_t *open_file);
int (*read_block_file)(vfs_mount_t *mount, vfs_open_file_t *open_file, void *buffer);
int (*block_file_seek)(vfs_mount_t *mount, vfs_open_file_t *open_file, u32_t block_number);
int (*close_block_file)(vfs_mount_t *mount, vfs_open_file_t *open_file);
} vfs_fs_t;
int vfs_init();
int vfs_mount(major_t maj, minor_t min, int fsType, char *mountPoint);
int vfs_umount(char *mountPoint);
int vfs_register_fs(int fsn, vfs_fs_t *fs);
int vfs_umount(char *mountPoint);
vfs_inode_t vfs_get_inode_number(char *path);
vfs_inode_t vfs_get_inode_number_rel(vfs_inode_t dir_inode, char *path);
vfs_inode_t vfs_real_inode(vfs_inode_t vfs_inode);
vfs_file_addr_t vfs_get_file_addr(vfs_inode_t vfs_inode);
vfs_inode_t vfs_entry_lookup(vfs_inode_t dir_inode, char *entry);
int vfs_mount_count();
vfs_mount_t *vfs_get_mount(int index);
int vfs_free_inodes(vfs_mount_t *mount);
int vfs_total_inodes(vfs_mount_t *mount);
int vfs_free_blocks(vfs_mount_t *mount);
int vfs_total_blocks(vfs_mount_t *mount);
vfs_inode_t vfs_alloc_inode(vfs_mount_t *mount);
int vfs_free_inode(vfs_mount_t *mount, u32_t inode_number);
u32_t vfs_alloc_block(vfs_mount_t *mount);
int vfs_free_block(vfs_mount_t *mount, u32_t block_number);
int vfs_link_deref(vfs_inode_t vfs_inode, char *link);
int vfs_stat(char *file, vfs_stat_t *stat);
int vfs_stat_inode(vfs_inode_t vfs_inode, vfs_stat_t *stat);
vfs_open_file_t *vfs_open_dir(char *path);
vfs_open_file_t *vfs_open_dir_inode(vfs_inode_t inode);
int vfs_read_dir(vfs_open_file_t *open_dir, vfs_dir_entry_t *dentry);
int vfs_close_dir(vfs_open_file_t *open_dir);
vfs_open_file_t *vfs_open_block_file(char *file);
vfs_open_file_t *vfs_open_block_file_inode(vfs_inode_t vfs_inode);
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

18
kernel/kernel.c
View File

@ -11,16 +11,14 @@
#include "functions.h" #include "functions.h"
#include "mm/mm.h" #include "mm/mm.h"
#include "mm/vmm.h" #include "mm/vmm.h"
#include "char/parallel.h"
#include "lang/conv.h" #include "lang/conv.h"
#include "char/vconsole.h" //#include "char/vconsole.h"
#include "fs/devices.h" #include "devices.h"
#include "display/display.h" #include "display/display.h"
#include "display/kout.h" #include "display/kout.h"
#include "sys/io.h" #include "sys/io.h"
#include "sys/pic.h" #include "sys/pic.h"
#include "char/keyboard.h" #include "char/keyboard.h"
#include "fs/devfs.h"
#include "block/ramdisk.h" #include "block/ramdisk.h"
#include "fs/vfs.h" #include "fs/vfs.h"
#include "fs/ext2.h" #include "fs/ext2.h"
@ -122,23 +120,23 @@ void k_init()
case 32: case 32:
vid_mem <<= 2; break; vid_mem <<= 2; break;
} }
// map in video memory so we can access the video card's LFB
vmm_mapn(0xF0000000, (u32_t)rm_params.vid_addr, (vid_mem >> 12) + 1); vmm_mapn(0xF0000000, (u32_t)rm_params.vid_addr, (vid_mem >> 12) + 1);
} }
} }
display_init(); // get us some virtual consoles to look at display_init(); // initialize display subsystem
display_activate(11); // activate kernel dump vconsole display_activate(11); // activate kernel dump vconsole
kprintf("HOS v0.16 initializing...\n"); kprintf("HOS v0.16 initializing...\n");
kprintf("Kernel load size: %d (0x%x) bytes (%d kb)\n", kernel_size(), kernel_size(), kernel_size() >> 10); kprintf("Kernel load size: %d (0x%x) bytes (%d kb)\n", kernel_size(), kernel_size(), kernel_size() >> 10);
kprintf("Kernel memory size: %d (0x%x) bytes (%d kb)\n", kernel_size_used(), kernel_size_used(), kernel_size_used() >> 10); kprintf("Kernel memory size: %d (0x%x) bytes (%d kb)\n", kernel_size_used(), kernel_size_used(), kernel_size_used() >> 10);
k_check(vfs_init(), "vfs_init() failed!"); k_check(vfs_init(), "vfs_init() failed!");
k_check(devfs_init(), "devfs_init() failed!");
int i; int i;
for (i = 0; i < mb_info_block.mods_count; i++) for (i = 0; i < mb_info_block.mods_count; i++)
{ {
kprintf("Loaded kernel module %d: 0x%x - 0x%x (%d bytes)\n", i, mb_modules[i].mod_start, mb_modules[i].mod_end, mb_modules[i].mod_end - mb_modules[i].mod_start); kprintf("Loaded kernel module %d: 0x%x - 0x%x (%d bytes)\n", i, mb_modules[i].mod_start, mb_modules[i].mod_end, mb_modules[i].mod_end - mb_modules[i].mod_start);
if (((mb_modules[i].mod_end - mb_modules[i].mod_start) > 1024) && /* if (((mb_modules[i].mod_end - mb_modules[i].mod_start) > 1024) &&
((ext2_super_block_t *)(mb_modules[i].mod_start + 1024))->s_magic == EXT2_MAGIC) ((ext2_super_block_t *)(mb_modules[i].mod_start + 1024))->s_magic == EXT2_MAGIC)
{ {
// we found an initrd // we found an initrd
@ -146,9 +144,9 @@ void k_init()
kprintf("initrd (%dkb) loaded\n", (mb_modules[i].mod_end - mb_modules[i].mod_start) >> 10); kprintf("initrd (%dkb) loaded\n", (mb_modules[i].mod_end - mb_modules[i].mod_start) >> 10);
k_check(vfs_mount(MAJORB_RAMDISK, initrd_minor, FS_EXT2, "/"), "Could not mount initrd to /!"); k_check(vfs_mount(MAJORB_RAMDISK, initrd_minor, FS_EXT2, "/"), "Could not mount initrd to /!");
} }
} */ }
vfs_open_file_t *root = vfs_open_dir("////"); /* vfs_open_file_t *root = vfs_open_dir("////");
if (root) if (root)
{ {
vfs_dir_entry_t dentry; vfs_dir_entry_t dentry;
@ -186,7 +184,7 @@ void k_init()
} }
else else
kprintf("Error: Could not open directory\n"); kprintf("Error: Could not open directory\n");
*/
criticalCounter--; criticalCounter--;
} }

25
kernel/lang/new.cpp Normal file
View File

@ -0,0 +1,25 @@
// Author: Josh Holtrop
// Date: 05/10/05
// Adds C++ support for new, delete functions
extern "C"
{
#include "hos_defines.h"
#include "mm/vmm.h"
}
//overload the operator "new"
void * operator new (u32_t size)
{ return kmalloc(size); }
//overload the operator "new[]"
void * operator new[] (u32_t size)
{ return kmalloc(size); }
//overload the operator "delete"
void operator delete (void *p)
{ kfree(p); }
//overload the operator "delete[]"
void operator delete[] (void *p)
{ kfree(p); }

258
kernel/lang/string.cpp Normal file
View File

@ -0,0 +1,258 @@
// string.cpp
// implements c++ string object for HOS
// Author: Josh Holtrop
// Date: 06/01/04
// Modified: 05/10/05
extern "C"
{
#include "string.h" //string class declaration
#include "lang/lang.h" //memcpy(void *dest, void *src, int n), strlen(char *str)
}
string::string()
{
myLength = 0;
myChars = new char; //myChars must be a valid pointer at all times
*myChars = 0;
}
string::~string()
{
delete[] myChars;
}
string::string(const string & orig)
{
myLength = orig.myLength;
myChars = new char[myLength + 1];
memcpy(myChars, orig.myChars, myLength + 1);
}
string::string(const char *cstring)
{
myLength = strlen(cstring);
myChars = new char[myLength + 1];
memcpy(myChars, cstring, myLength + 1);
}
string & string::operator=(const string & orig)
{
if (this != &orig)
{
delete[] myChars;
myLength = orig.myLength;
myChars = new char[myLength + 1];
memcpy(myChars, orig.myChars, myLength + 1);
}
return *this;
}
string & string::operator=(const char *cstring)
{
if (myChars != cstring)
{
delete[] myChars;
myLength = strlen(cstring);
myChars = new char[myLength + 1];
memcpy(myChars, cstring, myLength + 1);
}
return *this;
}
char * string::data() const { return myChars; }
int string::size() const { return myLength; }
string & string::operator+=(const string & str)
{
char *newStr = new char[myLength + str.myLength + 1];
memcpy(newStr, myChars, myLength);
memcpy(newStr + myLength, str.myChars, str.myLength + 1);
delete[] myChars;
myChars = newStr;
myLength += str.myLength;
return *this;
}
string & string::operator+=(const char *cstring)
{
char *newStr = new char[myLength + strlen(cstring) + 1];
memcpy(newStr, myChars, myLength);
memcpy(newStr + myLength, cstring, strlen(cstring) + 1);
delete[] myChars;
myChars = newStr;
myLength += strlen(cstring);
return *this;
}
string & string::operator+=(char chr)
{
myLength++;
char *newStr = new char[myLength + 1];
memcpy(newStr, myChars, myLength);
newStr[myLength - 1] = chr;
newStr[myLength] = 0;
delete[] myChars;
myChars = newStr;
return *this;
}
string string::operator+(const string & str)
{ return string(*this, str); }
string string::operator+(const char *cstring)
{ return string(*this, cstring); }
string string::operator+(char chr)
{ return string(*this, chr); }
string::string(const string & str1, const string & str2)
{
myLength = str1.myLength + str2.myLength;
myChars = new char[myLength + 1];
memcpy(myChars, str1.myChars, str1.myLength);
memcpy(myChars + str1.myLength, str2.myChars, str2.myLength + 1);
}
string::string(const string & str1, const char *cstring)
{
myLength = str1.myLength + strlen(cstring);
myChars = new char[myLength + 1];
memcpy(myChars, str1.myChars, str1.myLength);
memcpy(myChars + str1.myLength, cstring, strlen(cstring) + 1);
}
string::string(const char *cstring, const string & str)
{
myLength = str.myLength + strlen(cstring);
myChars = new char[myLength + 1];
memcpy(myChars, cstring, strlen(cstring));
memcpy(myChars + strlen(cstring), str.myChars, str.myLength + 1);
}
string::string(const string & str1, char chr)
{
myLength = str1.myLength + 1;
myChars = new char[myLength + 1];
memcpy(myChars, str1.myChars, myLength);
myChars[myLength - 1] = chr;
myChars[myLength] = 0;
}
string::string(char chr, const string & str1)
{
myLength = str1.myLength + 1;
myChars = new char[myLength + 1];
memcpy(myChars + 1, str1.myChars, myLength + 1);
*myChars = chr;
}
const char & string::operator[](unsigned int index) const
{
if (index < myLength)
return myChars[index];
return *myChars; //if index is invalid, return a pointer to the trailing 0
}
char & string::operator[](unsigned int index)
{
if (index < myLength)
return myChars[index];
return *myChars; //if index is invalid, return a pointer to the trailing 0
}
bool string::operator==(const string & second) const
{
if (myLength != second.myLength)
return false;
for (unsigned int i = 0; i < myLength; i++)
{
if (myChars[i] != second.myChars[i])
return false;
}
return true;
}
bool string::operator==(const char *cstring) const
{
if (myLength != strlen(cstring))
return false;
for (unsigned int i = 0; i < myLength; i++)
{
if (myChars[i] != cstring[i])
return false;
}
return true;
}
bool string::operator!=(const string & second) const
{ return !operator==(second); }
bool string::operator!=(const char *cstring) const
{ return !operator==(cstring); }
bool string::operator<(const string & second) const
{
char *c1 = myChars, *c2 = second.myChars;
while (*c1 == *c2 && *c1)
{
c1++;
c2++;
}
return *c1 < *c2;
}
bool string::operator>(const string & second) const
{
char *c1 = myChars, *c2 = second.myChars;
while (*c1 == *c2 && *c1)
{
c1++;
c2++;
}
return *c1 > *c2;
}
bool string::operator<(const char *cstring) const
{
char *c1 = myChars;
while (*c1 == *cstring && *c1)
{
c1++;
cstring++;
}
return *c1 < *cstring;
}
bool string::operator>(const char *cstring) const
{
char *c1 = myChars;
while (*c1 == *cstring && *c1)
{
c1++;
cstring++;
}
return *c1 > *cstring;
}
bool string::operator<=(const string & second) const
{ return !operator>(second); }
bool string::operator>=(const string & second) const
{ return !operator<(second); }
bool string::operator<=(const char *cstring) const
{ return operator<(cstring) || operator==(cstring); }
bool string::operator>=(const char *cstring) const
{ return operator>(cstring) || operator==(cstring); }

107
kernel/lang/string.h Normal file
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@ -0,0 +1,107 @@
// string.h
// implements c++ string object for HOS
// Author: Josh Holtrop
// Date: 06/01/04
// Modified: 05/10/05
#ifndef __HOS_STRING__
#define __HOS_STRING__ __HOS_STRING__
class string
{
private:
/* myChars is a pointer to a character array
* It will always be a valid pointer, not null.
* The constructor is responsible for initializing
* it to point to a 1-char array with myChars[0] == 0 */
char * myChars;
/* myLength holds how many characters are in the
* string, not including the trailing null value
* (ASCII 0 character) */
unsigned int myLength;
public:
/* Basic constructors */
string();
~string();
/* Copy constructor */
string(const string & orig);
/* Construct strings from c-style strings:
* Allows declarations like string s = "data"; */
string(const char *cstring);
/* Assignment operators */
string & operator=(const string & orig);
string & operator=(const char *cstring);
/* Boolean comparison operators */
bool operator==(const string & second) const;
bool operator==(const char *cstring) const;
bool operator!=(const string & second) const;
bool operator!=(const char *cstring) const;
bool operator<(const string & second) const;
bool operator>(const string & second) const;
bool operator<(const char *cstring) const;
bool operator>(const char *cstring) const;
bool operator<=(const string & second) const;
bool operator>=(const string & second) const;
bool operator<=(const char *cstring) const;
bool operator>=(const char *cstring) const;
/* Construct strings made up of combinations of other
* strings, c-style strings, and characters */
string(const string & str1, const string & str2);
string(const string & str1, const char *cstring);
string(const char *cstring, const string & str);
string(const string & str1, char chr);
string(char chr, const string & str1);
/* Append operators */
string & operator+=(const string & str);
string & operator+=(const char *cstring);
string & operator+=(char chr);
string operator+(const string & str);
string operator+(const char *cstring);
string operator+(char chr);
/* Direct character-access operators */
const char & operator[](unsigned int index) const;
char & operator[](unsigned int index);
/* Returns handle to actual character-array for programs
* that need raw data instead of a string object */
char * data() const;
/* Returns the size of the string. This is myLength
* and is the number of characters in the string
* not counting the trailing null (ASCII 0) character */
int size() const;
};
static inline bool operator==(char *cstring, const string & str)
{ return str == cstring; }
static inline bool operator!=(char *cstring, const string & str)
{ return str != cstring; }
static inline bool operator<(const char *cstring, const string & str)
{ return str > cstring; }
static inline bool operator>(const char *cstring, const string & str)
{ return str < cstring; }
static inline bool operator<=(const char *cstring, const string & str)
{ return str >= cstring; }
static inline bool operator>=(const char *cstring, const string & str)
{ return str <= cstring; }
#endif

3
rmmod/Makefile
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@ -1,7 +1,8 @@
NASM=nasm NASM=nasm
all: all:
$(NASM) -f bin rmmod.asm -l rmmod.lst -o rmmod.bin @echo ' $$(NASM) rmmod.bin'
@$(NASM) -f bin rmmod.asm -l rmmod.lst -o rmmod.bin
clean: clean:
-rm -f *~ *.o *.bin *.lst -rm -f *~ *.o *.bin *.lst