Subhobhai943/SUB-OS
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fix(vfs): resolve CWD tracking, filename clobbering, touch creation, and nano full-screen editing & saving

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subhobhai943 committed 2026-08-17 12:26:07 +05:30
1 parent d680335f05
commit 9f9a19bab0
5 files changed
+289 -130
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userland/lazybox/shell.c
+33 -17
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@@ -1,5 +1,6 @@
#include <userland/shell.h>
#include <userland/lazybox.h>
#include <fs/vfs.h>
#include <drivers/tty.h>
#include <drivers/keyboard.h>
#include <drivers/speaker.h>
@@ -19,11 +20,14 @@ static int history_count = 0;
static int history_head = 0;
static const char* shell_builtins[] = {
"lazybox", "ls", "cat", "touch", "mkdir", "wc", "echo",
"md5sum", "sha256sum", "crc32", "ifconfig", "ping", "arp",
"hdparm", "uname", "free", "uptime", "dmesg", "sleep", "clear",
"help", "neofetch", "calc", "hexdump", "matrix", "history", "tty",
"beep", "reboot", "shutdown", NULL
"lazybox", "nano", "ls", "cat", "touch", "mkdir", "pwd", "cd", "wc", "echo",
"head", "tail", "stat", "cp", "grep", "hexdump", "tts", "alsamixer",
"lsmod", "insmod", "rmmod", "md5sum", "sha256sum", "crc32", "rand",
"certcheck", "capsh", "ipcs", "ifconfig", "ping", "arp", "dhclient",
"nslookup", "hdparm", "lspci", "speaker", "mouse", "virtinfo",
"io_uring_test", "uname", "free", "uptime", "dmesg", "ps", "top",
"sleep", "reboot", "poweroff", "clear", "help", "neofetch", "calc",
"matrix", "history", "tty", "beep", "shutdown", NULL
};
static void history_add(const char* cmd) {
@@ -51,26 +55,34 @@ static void redraw_line(const char* prompt, const char* buffer, size_t len, size
static void cmd_help(void) {
printk(ANSI_BRIGHT_CYAN "================== SUB-OS Production Command Reference ==================\n" ANSI_RESET);
printk(ANSI_YELLOW " [File & Storage Tools]\n" ANSI_RESET);
printk(" " ANSI_GREEN "nano [file]" ANSI_RESET " - Full-screen visual interactive text editor\n");
printk(" " ANSI_GREEN "ls [path]" ANSI_RESET " - Directory list with type & inode numbers\n");
printk(" " ANSI_GREEN "cat <file>" ANSI_RESET " - Display file contents (supports /proc & /dev)\n");
printk(" " ANSI_GREEN "touch / mkdir" ANSI_RESET " - Create files and directories in VFS\n");
printk(" " ANSI_GREEN "touch <file>" ANSI_RESET " - Create empty files in VFS\n");
printk(" " ANSI_GREEN "mkdir <dir>" ANSI_RESET " - Create directories in VFS\n");
printk(" " ANSI_GREEN "cd [dir] / pwd" ANSI_RESET " - Change / Print current working directory\n");
printk(" " ANSI_GREEN "hdparm" ANSI_RESET " - Inspect ATA hard disk parameters & sectors\n\n");
printk(ANSI_YELLOW " [Sound & Audio]\n" ANSI_RESET);
printk(" " ANSI_GREEN "tts <text>" ANSI_RESET " - Phonetic formant voice synthesizer\n");
printk(" " ANSI_GREEN "alsamixer" ANSI_RESET " - Sound architecture & audio card status\n\n");
printk(ANSI_YELLOW " [Kernel & Modules]\n" ANSI_RESET);
printk(" " ANSI_GREEN "lsmod / insmod / rmmod" ANSI_RESET " - Manage dynamically loadable kernel modules\n\n");
printk(ANSI_YELLOW " [Cryptography & Security]\n" ANSI_RESET);
printk(" " ANSI_GREEN "sha256sum <file>" ANSI_RESET " - FIPS 180-4 SHA-256 secure hash\n");
printk(" " ANSI_GREEN "md5sum <file>" ANSI_RESET " - RFC 1321 MD5 message digest\n");
printk(" " ANSI_GREEN "crc32 <text>" ANSI_RESET " - IEEE 802.3 32-bit CRC calculation\n\n");
printk(" " ANSI_GREEN "crc32 <text>" ANSI_RESET " - IEEE 802.3 32-bit CRC calculation\n");
printk(" " ANSI_GREEN "certcheck / capsh" ANSI_RESET " - X.509 keyring & POSIX capabilities\n\n");
printk(ANSI_YELLOW " [Networking Suite]\n" ANSI_RESET);
printk(" " ANSI_GREEN "ifconfig" ANSI_RESET " - Ethernet eth0 configuration & RX/TX metrics\n");
printk(" " ANSI_GREEN "ping <ip>" ANSI_RESET " - Send ICMP echo requests with latency ms\n");
printk(" " ANSI_GREEN "arp" ANSI_RESET " - Display kernel ARP resolution cache table\n\n");
printk(" " ANSI_GREEN "dhclient" ANSI_RESET " - Request IP lease from DHCP server\n");
printk(" " ANSI_GREEN "nslookup <host>" ANSI_RESET " - Query DNS domain name server\n\n");
printk(ANSI_YELLOW " [System & Diagnostics]\n" ANSI_RESET);
printk(" " ANSI_GREEN "neofetch" ANSI_RESET " - System information & OS ASCII badge\n");
printk(" " ANSI_GREEN "free / uptime" ANSI_RESET " - Memory metrics and CPU uptime\n");
printk(" " ANSI_GREEN "dmesg" ANSI_RESET " - Kernel boot ring buffer log\n");
printk(" " ANSI_GREEN "hexdump [addr] [n]" ANSI_RESET " - Memory hex inspector\n");
printk(" " ANSI_GREEN "dmesg / ps / top" ANSI_RESET " - Kernel boot log & process manager\n");
printk(" " ANSI_GREEN "calc [A] [op] [B]" ANSI_RESET " - Arithmetic calculator (+, -, *, /, %%)\n");
printk(" " ANSI_GREEN "matrix" ANSI_RESET " - Digital rain screen animation\n");
printk(" " ANSI_GREEN "tty [1-4]" ANSI_RESET " - Switch virtual console (or Alt+F1-F4)\n");
printk(" " ANSI_GREEN "reboot / shutdown" ANSI_RESET " - Power management\n");
printk(ANSI_BRIGHT_BLACK "Tip: Use TAB for autocomplete, Up/Down for command history.\n" ANSI_RESET);
}
@@ -240,7 +252,7 @@ static void shell_process(const char* cmd) {
}
if (argc == 0) return;
// 1. LazyBox Applets
// 1. LazyBox Applets (ls, cat, touch, mkdir, cd, pwd, nano, etc.)
if (lazybox_has_applet(argv[0])) {
lazybox_run_applet(argv[0], argc, argv);
return;
@@ -274,8 +286,10 @@ static void shell_process(const char* cmd) {
printk(ANSI_YELLOW "Rebooting...\n" ANSI_RESET);
pit_sleep(200);
outb(0x64, 0xFE);
} else if (strcmp(argv[0], "shutdown") == 0) {
} else if (strcmp(argv[0], "shutdown") == 0 || strcmp(argv[0], "poweroff") == 0) {
printk(ANSI_YELLOW "System halted.\n" ANSI_RESET);
outw(0x604, 0x2000);
outw(0xB004, 0x2000);
while (1) hlt();
} else {
printk(ANSI_RED "Unknown command: %s. Type 'help' or 'lazybox'.\n" ANSI_RESET, argv[0]);
@@ -287,14 +301,16 @@ void shell_run(void) {
size_t cmd_len = 0;
size_t cursor_pos = 0;
int history_idx = -1;
const char* prompt = ANSI_BRIGHT_GREEN "sub-os> " ANSI_RESET;
char prompt[128];
printk(ANSI_BRIGHT_CYAN "\nWelcome to SUB-OS Modular Monolithic Linux Core!\n" ANSI_RESET);
printk("Type '" ANSI_YELLOW "help" ANSI_RESET "', '" ANSI_YELLOW "lazybox" ANSI_RESET "', or '" ANSI_YELLOW "neofetch" ANSI_RESET "' to begin.\n\n");
while (true) {
const char* cwd = vfs_getcwd();
snprintf(prompt, sizeof(prompt), ANSI_BRIGHT_GREEN "sub-os:" ANSI_BRIGHT_CYAN "%s" ANSI_BRIGHT_GREEN "> " ANSI_RESET, cwd);
printk("%s", prompt);
cmd_len = 0;
cursor_pos = 0;
cmd_buffer[0] = '\0';
@@ -361,12 +377,12 @@ void shell_run(void) {
char c = (char)(key & 0xFF);
if (c == 0x03) {
if (c == 0x03) { // Ctrl+C
printk("^C\n%s", prompt);
cmd_len = 0; cursor_pos = 0; cmd_buffer[0] = '\0';
continue;
}
if (c == 0x0C) {
if (c == 0x0C) { // Ctrl+L
tty_clear();
printk("%s%s", prompt, cmd_buffer);
continue;