From 5fefd233769a56caefdb2ffecaa9fb8b9ec6db86 Mon Sep 17 00:00:00 2001 From: user Date: Thu, 16 Jul 2026 12:49:19 +0200 Subject: fs rewrite stage 3: nested directories, paths, cwd (cd/mkdir/ls) - directories generalized: dir_find/dir_add/dir_remove take any dir inode; every dir carries '.'/'..'. Path resolution (resolve / resolve_parent) walks absolute or cwd-relative paths; open/mkdir/chdir/remove/opendir take paths. - per-process cwd: PROC_CWD in the PCB (root by default, inherited on fork); sys_chdir sets it, sys_opendir points ls at any directory. - shell: 'cd' builtin + cwd-aware prompt; 'mkdir'/'ls ' tools; 'exit'/'quit' and EOF call poweroff() (clean shutdown via the $ED opcode -> reliable save). - three HL/buffer-clobber bugs fixed along the way: resolve didn't preserve the path cursor across dir_find; cur_cwd clobbered HL; resolve_parent set the final name before resolve() overwrote wFsNameBuf (now copied after). - verified: nested mkdir/cd/save, multi-level paths (cat docs/sub/b), and the whole tree persists across a reboot. - README: document directories + the poweroff opcode. --- c/gbos.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'c/gbos.h') diff --git a/c/gbos.h b/c/gbos.h index 6badd16..c93414f 100644 --- a/c/gbos.h +++ b/c/gbos.h @@ -27,6 +27,10 @@ int fgetc(unsigned char fd); /* a byte, or -1 at EOF */ void fputc(unsigned char fd, char ch); unsigned char flist(unsigned char slot, char *namebuf); /* 1 if slot used */ void fremove(const char *name); +unsigned char mkdir(const char *path); +unsigned char chdir(const char *path); +unsigned char opendir(const char *path); +void poweroff(void); /* clean emulator shutdown (saves) */ #define O_READ 0 #define O_WRITE 1 #define NOFD 0xFF -- cgit v1.3.1-sl0p