plan9front.git - my patches for 9front; forked from http://git.9front.org/plan9front/plan9front/HEAD/info.html

Age	Commit message (Collapse)	Author
2012-10-16	fortunes, rob, rsc, troll: the war is over	stanley lieber

2012-10-16	kernel: duppage cleanup	cinap_lenrek
	remove the sched() call and retry loop from duppage() and just drop the page lock, then reacquire it after lock(&palloc).
2012-10-16	kernel: cachedel() lock order, lookpage, cleanup	cinap_lenrek
	the lock order of page.Lock -> palloc.hashlock was violated in cachedel() which is called from the pager. change the code to do it in the right oder to prevent deadlock. change lookpage to retry on false hit. i assume that a false hit means: a) we'r low on memory -> cached page got uncached/reused b) duppage() got called on the page, meaning theres another cached copy in the image now. paging in is expensive compared to the hashtable lookup, so i think retrying is better. cleanup fixfault, adding comments.
2012-10-15	swap: track swap pages with > 255 references, setswapchan() swapimage.c	cinap_lenrek
	swaped pages use a 8bit refcount where as the Page uses a 16bit one. this might be exploited with having a process having a single page swaped out and then forking 255 times to make the swap map refcount overflow and panic the kernel. this condition is probably very rare. so instead of doubling the size of the swap map, we add a single 32bit refcount swapalloc.xref which will keep the combined refcount of all swap map entries who exceeded 255 references. zero swapimage.c in setswapchan() after closing it as the stat() call below might error leaving a dangeling pointer.
2012-10-14	kernel: attachimage / exec error handling	cinap_lenrek
	attachimage()'s approach to handling newseg() error is flawed: a) the the image is on the hash table, but ref is still 0, and there is no segment/pages attached to it so nobody is going to reclaim / putimage() it -> leak b) calling pexit() would deadlock us because exec has acquired up->seglock when calling attachimage(), so this would just deadlock. the fix does the following: attachimage() will putimage() and nexterror() if newseg() fails instead of pexit(). this is less surprising. exec now keeps the condition variable commit which is set once we are commited / reached the point of no return and check this variable in the highest waserror() handler and pexit() us there. this way we have released up all the locks and pexit() will cleanup. note: this bug shouldnt us hit in with the current newseg() implementation as it uses smalloc() which would wait to satisfy the allocation instead of erroring.
2012-10-14	update fshalt(8) manpage	cinap_lenrek

2012-10-14	formpost becomes hpost	cinap_lenrek

2012-10-13	urlencode: fix /fd/0 use	cinap_lenrek

2012-10-12	ircrc: fix spurious autojoin	cinap_lenrek

2012-10-12	ircrc(1): man page fixes, thanks pap	stanley lieber

2012-10-11	hget(1): fix man page errors, add another example	stanley lieber

2012-10-12	ircrc: various improvements (thanks again pap!)	cinap_lenrek
	the -t option was ineffective. this fixes is. fix incompatibility with 9vx as its tcp/status file returns slightly different format than Plan 9. strip annoying character from nickserv.
2012-10-11	add /rc/bin/formpost; add formpost to hget(1) man page	stanley lieber

2012-10-11	cifsd: fix 64bit fileoffset bug	cinap_lenrek
	the low 32bit word got sign-extended on vlong conversion. m(
2012-10-11	ircrc(1): fix error	stanley lieber

2012-10-11	add /sys/man/1/ircrc, thanks pap	stanley lieber

2012-10-11	kernel: try to catch some (rare) mistakes	cinap_lenrek
	kstrcpy() did not null terminate for < 4 byte buffers. fixed, but i dont think there is any case where this can happen in practice. always set malloctag in kstrdup(), cleanup. always use ERRMAX bounded kstrcpy() to set up->errstr, q->err and note[]->msg. paranoia. instead of silently truncating interface name in netifinit(), panic the kernel if interface name is too long as this case is clearly a mistake. panic kernel when filename is too long for addbootfile() in devroot. this might happen if your kernel configuration is messed up.
2012-10-11	6in4: fix exit status, less strict src filtering, logging (import from sources)	cinap_lenrek

2012-10-10	kenrel: simplify image cache by use of ccloseq()	cinap_lenrek

2012-10-09	vncv: cleanup	cinap_lenrek

2012-10-09	vncv: fork tcs with RFNOWAIT as we dont collect wait message	cinap_lenrek

2012-10-09	vncv: snarfvers race, silly walks, add -l option for clipboard charset	cinap_lenrek

2012-10-09	/sys/lib/acid/kernel: fix imagecache() and procenv()	cinap_lenrek

2012-10-09	merge	cinap_lenrek

2012-10-09	/sys/lib/acid/kernel: needacid("chan")	cinap_lenrek

2012-10-08	fortunes	aiju

2012-10-07	netaudit(8): english	stanley lieber

2012-10-08	content-driven bullshit	cinap_lenrek

2012-10-08	netaudit changes and manual page	cinap_lenrek

2012-10-07	hjfs(8): fix wording	stanley lieber

2012-10-07	fortunes, rsc, rob: more	stanley lieber

2012-10-07	add /sys/man/8/hjfs	stanley lieber

2012-10-07	just-in-time-scale bullshit	cinap_lenrek

2012-10-07	fixed the bullshit in bullshit	aiju

2012-10-07	/sys/lib/acid/kernel: fix intrcount()	cinap_lenrek

2012-10-06	hjfs(4): fly your flag	stanley lieber

2012-10-06	fortunes, rob, rsc, theo, troll: updates	stanley lieber

2012-10-06	pc kernel: make imagemem maxsize 10% less of mainmem maxsize	cinap_lenrek

2012-10-06	add /sys/man/4/hjfs	stanley lieber

2012-10-06	tftpfs(4) example typo	cinap_lenrek

2012-10-06	httpfile(4) section name quoting	cinap_lenrek

2012-10-06	paint(1) fix bad cross reference	cinap_lenrek

2012-10-05	tftpfs(4): minor corrections	stanley lieber

2012-10-06	tftpfs: add manpage, add -x option	cinap_lenrek

2012-10-06	libfis: do not lie about logical sector units	cinap_lenrek

2012-10-05	urlencode: encode null bytes	cinap_lenrek

2012-10-05	urlencode: fix null byte hexdigit() bug	cinap_lenrek

2012-10-05	urlencode: decode + as space	cinap_lenrek

2012-10-05	replace urlencode with c version that isnt broken for utf-8	cinap_lenrek

2012-10-04	add /rc/bin/urlencode	stanley lieber