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. --- src/proc.asm | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'src/proc.asm') diff --git a/src/proc.asm b/src/proc.asm index cd79160..c22d40d 100644 --- a/src/proc.asm +++ b/src/proc.asm @@ -226,7 +226,9 @@ ProcCreate:: ld [hl+], a ; PROC_STDIN = console ld [hl+], a ; PROC_STDOUT = console ld a, $FF - ld [hl], a ; PROC_PROG = none + ld [hl+], a ; PROC_PROG = none + ld a, ROOT_INO + ld [hl], a ; PROC_CWD = root ; build the initial stack frame in the task's RAM bank ld a, [wTmpEntry] @@ -458,7 +460,10 @@ sys_fork:: ld [hl+], a ; child STDOUT = parent STDOUT inc de ld a, [de] - ld [hl], a ; child PROC_PROG = parent PROC_PROG + ld [hl+], a ; child PROC_PROG = parent PROC_PROG + inc de + ld a, [de] + ld [hl], a ; child PROC_CWD = parent PROC_CWD ; ---- return to the parent with child pid ---- ld a, [wForkUserSP] -- cgit v1.3.1-sl0p