xv6-riscv - MIT xv6-RISCV kernel modified to RV64I base integer extension

Age	Commit message (Collapse)	Author
2007-08-21	remove namelen parameter	rsc

2007-08-21	Various cleanup:	rsc
	- Got rid of dummy proc[0]. Now proc[0] is init. - Added initcode.S to exec /init, so that /init is just a regular binary. - Moved exec out of sysfile to exec.c - Moved code dealing with fs guts (like struct inode) from sysfile.c to fs.c. Code dealing with system call arguments stays in sysfile.c - Refactored directory routines in fs.c; should be simpler. - Changed iget to return unlocked inode structure. This solves the lookup-then-use race in namei without introducing deadlocks. It also enabled getting rid of the dummy proc[0].
2007-08-20	checkpoint - simpler namei interface	rsc

2007-08-20	shuffle fs.c in bottom-up order	rsc

2007-08-10	various cleanups	rsc

2007-08-10	Make cp a magic symbol.	rsc

2007-08-09	The final curproc[cpu()] is now cp	rsc

2007-08-09	Clearer namei	rsc

2007-08-08	move ialloc body up, avoiding double check for end of loop	rsc

2007-08-08	panic like bget	rsc

2007-08-08	iincref returns new ref	rsc

2007-08-08	fix . .. unlink bug	rsc

2006-09-08	some comment changes	kaashoek

2006-09-08	++	rsc

2006-09-08	fix various comments	rsc

2006-09-07	allow long names again	rsc

2006-09-07	clean namei search loop	rsc

2006-09-07	comments	rsc

2006-09-07	remove _ prefixes	rsc

2006-09-06	wrap long lines	rsc

2006-09-06	for vs while	rsc

2006-09-06	break single-line if statements	rsc

2006-09-06	no /* */ comments	rsc

2006-09-06	standardize various * conventions	rsc

2006-09-06	spacing fixes: no tabs, 2-space indents (for rtm)	rsc

2006-08-30	complain if no disk 1	rtm
	lots of cleanup
2006-08-29	clear killed flag in exit	rtm
	idecref cwd in exit
2006-08-26	consistently ignore more than 14 chars in path component	rtm
	forbid create or write of existing directory mkdir("d1/d2/d3"), .. should refer to d2, not cwd mkdir increase parent link count
2006-08-25	inode addrs[NDIRECT] -> NADDRS	rtm
	fix race in mknod / creat use last component in dirent in mknod, not path
2006-08-24	big directory test	rtm

2006-08-24	fix bugs in indirect-file code	kaashoek
	clean up test program
2006-08-24	user-level malloc (untested)	kaashoek
	nit in sbrk indirect block fix dup to share fd struct
2006-08-19	chdir	kaashoek
	cd in shell nits in mkdir, ls, etc.
2006-08-15	commented out code for cwd	kaashoek

2006-08-14	set size for directories correctly in wdir and mkfs	kaashoek
	mkdir ls shows stat info for each dir entry
2006-08-13	wdir now uses readi/writei	rtm

2006-08-13	fix iget() bug that allocated in-use inode[] entries	rtm

2006-08-13	namei returns locked parent dir inode for create / unlink	rtm
	don't hold fd table lock across idecref() (latter does block i/o) idecref calls iput() in case last ref -> freeing inode dir size is 512 * # blocks, so readi/writei &c work unlink deletes dirent even if ip->nlink > 0
2006-08-13	zero freed blocks	kaashoek
	multi-block directories track size of directory (size = number entries in use) should namei (and other code that scans through directories) scan through all blocks of a directory and not use size?
2006-08-13	link()	rtm

2006-08-12	zero out all of dirent.name when creating	rtm
	don't increase length of directory
2006-08-12	LRU disk cache replacement	rtm

2006-08-12	free inode only when noone is holding a pointer to it. should fix open-unlink-	kaashoek
	read problem, but untested
2006-08-12	mknod set nlink = 1	rtm
	usertests for concurrent create/delete, and read() after unlink()
2006-08-12	fstat	kaashoek
	primitive ls
2006-08-12	unlink,mknod,create with multi-component pathnames should work now	kaashoek
	remove console init code from userfs
2006-08-11	fix deadlock---iput(dp) asap	kaashoek
	working unlink, but doesn't free dir blocks that become empty remove out-of-date comment in ioapic
2006-08-11	init creates console, opens 0/1/2, runs sh	rtm
	sh accepts 0-argument commands (like userfs) reads from console
2006-08-10	interrupts could be recursive since lapic_eoi() called before rti	rtm
	so fast interrupts overflow the kernel stack fix: cli() before lapic_eoi()
2006-08-10	low-level keyboard input (not hooked up to /dev yet)	rtm
	fix acquire() to cli() before incrementing nlock make T_SYSCALL a trap gate, not an interrupt gate sadly, various crashes if you hold down a keyboard key...