wm: teppich

Download patch

ref: 9cb02ecc484ffa07a0a6052cbd40794572c340e2
parent: b4587b6d4f1c365c7ecfe653264046bb49ca7478
author: mkf <mkf@cloud9p.org>
date: Fri Nov 17 12:56:13 IST 2023 

lots of changes.

fix backspace bug in shell
clear cmd memory before first run
add basic memory mangment
add malloc()
add lladd() and ll_t
get rid of uneeded while in ps2.c
add err.h
enable some warnnings in CFLAG
add fs.h
add fs.c
add user.c


--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@
 LD=i686-linux-gnu-ld.bfd
 AS=i686-linux-gnu-as
 
-CFLAGS=-O0 -g -nostdinc -I./include/ -ffreestanding -fcommon -fno-pie -fno-stack-limit -fno-stack-check -fno-stack-protector
+CFLAGS=-O0 -g -nostdinc -I./include/ -ffreestanding -fcommon -fno-pie
 ASFLAGS=-g
 LDFLAGS=-T linker.ld
 
@@ -16,14 +16,16 @@
 	libc/strcmp.o\
 	libc/memcpy.o\
 	libc/memset.o\
+	libc/lladd.o \
 
 K=\
+	pc/boot.o\
 	pc/x86.o\
 	pc/kern.o\
-	pc/boot.o\
 	pc/vga.o\
 	pc/ps2.o\
 	pc/com.o\
+	pc/mem.o\
 	${L}
 
 all: teppich.elf
--- /dev/null
+++ b/include/err.h
@@ -1,0 +1,14 @@
+#pragma once
+enum
+{
+	OK = 0,
+
+	/* you don't want these mass up with your values */
+	PERM_DENIED = -128, 
+	NAME_TOO_LONG,
+	NO_FILE,
+	FS_NOT_READY,
+	DIR_NOT_EMPTY,
+	NO_MEM,
+	LL_ERR,
+}err;
--- /dev/null
+++ b/include/fs.h
@@ -1,0 +1,41 @@
+#include <u.h>
+
+#define NAME_MAX 16
+
+enum
+{
+	DIR,
+	FILE,
+	VFILE, /* shell files */
+};
+
+typedef struct
+{
+	uint32 inode;
+	uint32 size;
+
+	uint8 owner;
+	uint8 perms;
+
+	uint8 type;
+
+	char *name;
+	char **path; /* "/" "usr/" "local" */
+
+	char *content;
+	
+}file_t;
+
+typedef struct
+{
+	uint32 inode;
+
+	uint8 encryption;
+	uint8 compression;
+
+	uint8 type;
+	uint8 *start;
+
+	ll_t users;
+	ll_t files;
+}fs_t;
--- a/include/libc.h
+++ b/include/libc.h
@@ -4,3 +4,5 @@
 int strcmp(char *s1, char *s2);
 void* memset(void* src, char c, unsigned int len);
 void* memcpy(void *a1, void *a2, unsigned int len);
+int lladd(ll_t*, void*);
+int lldel(ll_t*, void*);
--- a/include/u.h
+++ b/include/u.h
@@ -1,5 +1,4 @@
 #pragma once
-
 #define nil ((void*)0x0)
 
 typedef int size_t;
@@ -11,4 +10,10 @@
 typedef short int16;
 
 typedef unsigned long uint32;
-typedef long int32;
\ No newline at end of file
+typedef long int32;
+
+typedef struct
+{
+	void *val;
+	void *next;
+}ll_t;
--- /dev/null
+++ b/include/user.h
@@ -1,0 +1,8 @@
+typedef struct
+{
+	uint8 id;
+	char *name;
+	char *pass;
+}user_t;
+
+user_t cuser;
--- /dev/null
+++ b/libc/lladd.c
@@ -1,0 +1,20 @@
+#include <u.h>
+#include <err.h>
+#include <mem.h>
+
+int
+lladd(ll_t *last, void *data)
+{
+	ll_t *temp = malloc(sizeof(ll_t*));
+
+	temp->val = data;
+	temp->next = nil;
+
+	if(last->next != nil)
+	{
+		return LL_ERR;
+	}
+
+	last->next = temp;
+	return OK;
+}
--- a/pc/kern.c
+++ b/pc/kern.c
@@ -1,6 +1,8 @@
+#include <u.h>
 #include <vga.h>
 #include <com.h>
 #include <ps2.h>
+#include <mem.h>
 #include <libc.h>
 
 /* abandon hope, all ye who enter here */
@@ -9,14 +11,11 @@
 {
 	vga_puts("panic: give up. it's over.\n");
 	com_puts("panic: give up. it's over.\n");
-	
 }
 
 int
 run(char* cmd)
 {
-	/* vga_puts(cmd); */
-
 	/* replace it with a proper table */
 	if(!strcmp(cmd, "clear"))
 	{
@@ -29,9 +28,12 @@
 	else if(!strcmp(cmd, "reboot"))
 		return 0;
 	else
-		vga_puts("no such command");
+	{
+		vga_puts("\nno such command\n");
+	}
 
 	vga_putc('\n');
+	vga_puts("> ");
 	return 1;
 
 }
@@ -40,12 +42,11 @@
 repl(void)
 {
 	char c;
-	char *cmd = "";
-	int i = 0;
+	char *cmd;
 
-	vga_puts("salam az Teppich\n");
+	int i = 0;
+	memset(cmd, 0, 16); 
 	vga_puts("> ");
-
 	while(1)
 	{
 
@@ -59,26 +60,35 @@
 		{
 			if(!run(cmd))
 				return;
+
 			/* clear the mess */
+			cmd = malloc(16);
 			i = 0;
-			memset(cmd, 0, 16);
-
-			vga_puts("> ");
-
+			
 		}
-		else
+		else if(c != '\b')
 		{
-			*(cmd+i) = c; /* heb */
+			*(cmd+i) = c;
 			i++;
 		}
+		else
+		{
+			/* we don't want a negative i */
+			if(i)
+				i--;
+			*(cmd+i) = 0;
+			
+		}
 	}
 }
 
-
 void
 kernel_main(void) 
 {
-	vga_init(WHITE, BLUE);
+	memset(memap, FREE, MEM_MAX * (1024 / BLOCKSIZE));
+
+	vga_init(BLUE, LIGHT_GREY);
+	vga_puts("Teppich\n");
 
 	repl();
 }
--- a/pc/ps2.c
+++ b/pc/ps2.c
@@ -11,7 +11,7 @@
 void
 ps2_init()
 {
-	int a = 256 - 3; // 2^8 - 1- 2
+	int a = 256 - 3; // 11111100
 	outb(0x64, SET_RATE);
 	outb(0x64, a);
 }
@@ -20,15 +20,12 @@
 ps2_getc()
 {
 	char c;
-	while(1)
-	{
-		if(!(ps2_read_status() & 1))
-			return 0;
+	if(!(ps2_read_status() & 1))
+		return 0;
 
-		c = inb(KB);
-		if(c & 0x80)
-			return 0;
-		return keymap[c];
+	c = inb(KB);
+	if(c & 0x80)
+		return 0;
 
-	}
+	return keymap[c];
 }
-- 
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