code: mafs

Download patch

ref: 4b8b6b57fdbce99d2962946b7638694594dfe607
parent: fc5add282e0dadcc4a1980cf8376e825b976771e
author: 9ferno <gophone2015@gmail.com>
date: Tue Jan 10 16:23:40 EST 2023 

bug fixes for tests


--- a/9p.c
+++ b/9p.c
@@ -2,6 +2,7 @@
 
 Tlock	*tlockhead = nil, *tlocktail = nil;
 QLock	tlock;
+s8 err[ERRMAX];
 
 extern u32 mpsrvpid;
 extern u8 noauth;
@@ -82,7 +83,6 @@
 	Iobuf *dbuf, *cbuf, *pbuf;
 	u64 chreli, blkno;
 	s8 v;
-	char err[ERRMAX];
 
 	if(shuttingdown)
 		return nil;
@@ -346,9 +346,11 @@
 		error(errstring[Eshutdown]);
 
 	if(req->fid->qid.type == QTAUTH){
+		poperror();
 		authread(req);
 		return;
 	}else if(req->fid->qid.path == Qpctl){
+		poperror();
 		ctlread(req);
 		return;
 	}
@@ -547,12 +549,12 @@
 	if(readonly)
 		error(errstring[Eronly]);
 	if(req->fid->qid.type == QTAUTH){
-		authwrite(req);
 		poperror();
+		authwrite(req);
 		return;
 	}else if(req->fid->qid.path == Qpctl){
-		ctlwrite(req);
 		poperror();
+		ctlwrite(req);
 		return;
 	}else if(req->fid->qid.path < Qproot)
 		error(errstring[Eaccess]);
@@ -700,12 +702,9 @@
 		nexterror();
 	}
 	dparent = dbuf->d;
-	if(canaccess(((Aux*)req->fid->aux)->uid, dparent, DMWRITE) == 0)
+	if(canaccess(aux->uid, dparent, DMWRITE) == 0)
 		error(errstring[Eperm]);
 
-	if(canaccess(aux->uid, dparent, DMWRITE) == 0)
-		error(errstring[Eaccess]);
-
 	fid->omode = OREAD;
 	switch(req->ifcall.mode & 7) {
 		case OREAD:
@@ -735,6 +734,9 @@
 		if(dchild->qpath == Qpnone || dchild->tag != Tdentry)
 			error(errstring[Ephase]);
 
+		if(canaccess(aux->uid, dchild, DMWRITE) == 0)
+			error(errstring[Eaccess]);
+
 		/* req->ifcall.name matched, truncate file and use it */
 		if(permcheck(dchild->uid, dchild->gid, aux->uid, perm, ORDWR) == 0)
 			error(errstring[Eperm]);
@@ -795,8 +797,6 @@
 			putbuf(cbuf, 0);
 			nexterror();
 		}
-		if(canaccess(aux->uid, cbuf->d, DMWRITE) == 0)
-			error(errstring[Eaccess]);
 	}
 	if(addname(dparent, aux->uid, reli, req->ifcall.name) == 0)
 		error(errstring[Ephase]);
@@ -1211,18 +1211,13 @@
 startproc(Buffer *b, int id, u8 syncer)
 {
 	char name[128];
-	Errenv env;
+	// Errenv env = {0};
 
 	switch(rfork(RFPROC|RFMEM|RFFDG)){
 	case -1:
 		panic("can't fork");
 	case 0:
-		envpp = privalloc();
-		if(_nprivates != envpidx)
-			panic("_nprivates != envpidx\n");
-		envpidx = _nprivates;	/* the index in _privates holding the Errenv location */
-		*envpp = &env;
-
+		// *envpp = &env;
 		if(chatty9p > 1)
 			dprint("child %d pid: %d\n", id, getpid());
 		break;
@@ -1286,13 +1281,29 @@
 void
 mfsread(Req *r)
 {
-	put(&buf, fsread, r);
+	/*
+		auth should run on the srv process and not the worker.
+		It returns an auth botch error when the worker does it.
+	 */
+	if(r->fid->qid.type == QTAUTH){
+		authread(r);
+		return;
+	}else
+		put(&buf, fsread, r);
 }
 
 void
 mfswrite(Req *r)
 {
-	put(&buf, fswrite, r);
+	/*
+		auth should run on the srv process and not the worker.
+		It returns an auth botch error when the worker does it.
+	 */
+	if(r->fid->qid.type == QTAUTH){
+		authwrite(r);
+		return;
+	}else
+		put(&buf, fswrite, r);
 }
 
 void
--- a/all.h
+++ b/all.h
@@ -119,7 +119,7 @@
 void	putbuffree(Iobuf *p);
 void	settag(Iobuf *p, u8 tag, u64 qpath);
 void	showbuf(Iobuf *p);
-s32		showhashbuckets(s8 *buf, s32 nbuf);
+u32		showhashbuckets(s8 *buf, u32 nbuf);
 
 /* writer functions */
 void	initwriter(void);
--- a/block.c
+++ b/block.c
@@ -26,10 +26,9 @@
 	u64 size, blkno;
 	u8 buf[Maxdatablocksize];
 	Data *da;
-	Errenv env;
+	Errenv env = {0};
 
 	envpp = privalloc();
-	envpidx = _nprivates;	/* the index in _privates holding the Errenv location */
 	*envpp = &env;
 	if(waserror()){
 		panic(0, "err stack %d: %lux %lux %lux %lux %lux %lux",
--- a/ctl.c
+++ b/ctl.c
@@ -72,8 +72,8 @@
 	return 0;
 };
 
-u64
-fillctlmsg(s8 *buf, u64 nbuf)
+u32
+fillctlmsg(s8 *buf, u32 nbuf)
 {
 	u64 nfree, used;
 	u64 n;
@@ -139,21 +139,24 @@
 void
 ctlread(Req *req)
 {
-	if(((Aux*)req->fid->aux)->ctlmsg == nil){
-		((Aux*)req->fid->aux)->ctlmsg = emalloc9p(MiB);
-		((Aux*)req->fid->aux)->nctlmsg = 0;
+	Aux *aux;
+
+	aux = (Aux*)req->fid->aux;
+	if(aux->ctlmsg == nil){
+		aux->ctlmsg = emalloc9p(MiB);
+		aux->nctlmsg = 0;
 	}
 	if(req->ifcall.offset == 0)
-		((Aux*)req->fid->aux)->nctlmsg = fillctlmsg(((Aux*)req->fid->aux)->ctlmsg, MiB);
-	if(req->ifcall.offset < ((Aux*)req->fid->aux)->nctlmsg){
-		req->ofcall.count = min(req->ifcall.count,((Aux*)req->fid->aux)->nctlmsg-req->ifcall.offset);
-		memcpy(req->ofcall.data, ((Aux*)req->fid->aux)->ctlmsg+req->ifcall.offset, req->ofcall.count);
+		aux->nctlmsg = fillctlmsg(aux->ctlmsg, MiB);
+	if(req->ifcall.offset < aux->nctlmsg){
+		req->ofcall.count = min(req->ifcall.count,aux->nctlmsg-req->ifcall.offset);
+		memcpy(req->ofcall.data, aux->ctlmsg+req->ifcall.offset, req->ofcall.count);
 		req->ofcall.offset = req->ifcall.offset+req->ofcall.count;
 	}
-	if(req->ifcall.offset == ((Aux*)req->fid->aux)->nctlmsg){
-		free(((Aux*)req->fid->aux)->ctlmsg);
-		((Aux*)req->fid->aux)->ctlmsg = nil;
-		((Aux*)req->fid->aux)->nctlmsg = 0;
+	if(req->ifcall.offset == aux->nctlmsg){
+		free(aux->ctlmsg);
+		aux->ctlmsg = nil;
+		aux->nctlmsg = 0;
 	}
 	respond(req, nil);
 }
--- a/custom.acid
+++ b/custom.acid
@@ -1,5 +1,5 @@
 include("mafs.acid");
-include("extents.acid");
+include("../libextents/extents.acid");
 
 defn
 Qid9p1(addr) {
--- a/dat.h
+++ b/dat.h
@@ -131,7 +131,7 @@
 	Qpfrees		= Bdfrees,	/* /a/frees block Tag.qpath */
 
 				/* system qpaths */
-	Qpmagic		= Bdroot+1,	/* magic block Tag.qpath */
+	Qpmagic		= Bdrootlnamesextents+1,	/* magic block Tag.qpath, could use Bdroot butt this avoids confusion by keeping the block numbers and qpaths distinct */
 	Qpconfig0,	/* /a/bkp/config.0 block Tag.qpath */
 	Qpsuper0,	/* /a/bkp/super.0 block Tag.qpath */
 	Qproot0,	/* /a/bkp/root.0 block Tag.qpath */
@@ -250,7 +250,7 @@
 	u8 tlocked;	/* for exclusive use files, flag to indicate lock */
 	u64 dri;	/* directory index while reading a directory */
 	s8 *ctlmsg;
-	u64 nctlmsg;
+	u32 nctlmsg;
 	/* u64 lastreadahead; TODO */
 };
 
@@ -423,11 +423,11 @@
 	jmp_buf label[16];
 	u8 nlabel;
 };
-extern s8 envpidx;	/* the index in _privates holding the Errenv location */
+extern s8 err[ERRMAX];
 extern Errenv **envpp;
-extern void	**_privates;	/* defined in libc */
-extern int	_nprivates;
-int waserror(void);
-void poperror(void);
 void nexterror(void);
 void error(s8 *fmt, ...);
+extern void showerrenv(char *msg);
+#define		poperror()	(*envpp)->nlabel--
+/* #define		waserror()	(showerrenv("waserror before\n"), (*envpp)->nlabel++, setjmp((*envpp)->label[(*envpp)->nlabel-1])) */
+#define		waserror()	((*envpp)->nlabel++, setjmp((*envpp)->label[(*envpp)->nlabel-1]))
--- a/dentry.c
+++ b/dentry.c
@@ -485,6 +485,7 @@
 		error("savefrees nbuf not enough");
 
 	/* writing the actual extents now */
+	truncatefile(qpath, blkno, uid);
 	writefile(blkno, qpath, uid, buf, nbuf, 0);
 	free(buf);
 }
--- a/error.c
+++ b/error.c
@@ -5,26 +5,26 @@
 
 s8 envpidx = -1;		/* the index in _privates holding the Errenv location. hack: hoping that this will be the same across all processes */
 Errenv **envpp = nil;
+extern int	dprint(char *fmt, ...);
 
-int
-waserror(void)
-{
-	Errenv *env = _privates[envpidx];
-	++env->nlabel;
-	return setjmp(env->label[env->nlabel-1]);
-}
-
 void
-poperror(void)
+showerrenv(char *msg)
 {
+	u8 i;
 	Errenv *env = *envpp;
-	--env->nlabel;
+
+	dprint("%s", msg);
+	dprint("env 0x%p env->nlabel %hhud\n", env, env->nlabel);
+	for(i = 0; i < env->nlabel; i++){
+		dprint("i %hhud pc 0x%p\n", i, env->label[i][JMPBUFPC]);
+	}
 }
 
 void
 nexterror(void)
 {
-	Errenv *env = _privates[envpidx];
+	Errenv *env = *envpp;
+	// showerrenv("nexterror before\n");
 	longjmp(env->label[--env->nlabel], 1);
 }
 
@@ -37,6 +37,7 @@
 	va_start(arg, fmt);
 	vseprint(buf, buf+ERRMAX, fmt, arg);
 	va_end(arg);
+	// dprint("error: %s\n", buf);
 	errstr(buf, ERRMAX);
 	nexterror();
 }
--- a/free.c
+++ b/free.c
@@ -31,10 +31,9 @@
 main(int argc, char *argv[])
 {
 	u64 size;
-	Errenv env;
+	Errenv env = {0};
 
 	envpp = privalloc();
-	envpidx = _nprivates;	/* the index in _privates holding the Errenv location */
 	*envpp = &env;
 	if(waserror()){
 		panic(0, "err stack %d: %lux %lux %lux %lux %lux %lux",
--- a/fsok.c
+++ b/fsok.c
@@ -24,10 +24,9 @@
 	u64 size;
 	s8 buf[Blocksize];
 	Dentry *d;
-	Errenv env;
+	Errenv env = {0};
 
 	envpp = privalloc();
-	envpidx = _nprivates;	/* the index in _privates holding the Errenv location */
 	*envpp = &env;
 	if(waserror()){
 		panic(0, "err stack %d: %lux %lux %lux %lux %lux %lux",
--- a/iobuf.c
+++ b/iobuf.c
@@ -55,14 +55,16 @@
 	ufree(&memunits, (m-memunitpool)/Blocksize, len);
 }
 
-s32
-showhashbucket(Iobuf *p, s8 *buf, s32 nbuf)
+u32
+showhashbucket(Iobuf *p, s8 *buf, u32 nbuf)
 {
-	s32 n;
+	u32 n;
 	char locked[32];
 	u8 tag;
 	char *name;
 	u16 namelen;
+	Iobuf *pdbuf;
+	Dentry *pd;
 
 	if(p == nil)
 		return 0;
@@ -72,6 +74,8 @@
 		wunlock(p);
 	}else
 		strcpy(locked, "locked");
+	name = nil;
+	namelen = 0;
 	if(p->tag == Tdata)
 		n = snprint(buf, nbuf, "%s %llud %s\n",
 					tagnames[p->tag], p->blkno, locked);
@@ -82,11 +86,24 @@
 					tagnames[tag], p->blkno, (nsec()-p->atime)/Nsec,
 					locked, p->append!=nil?"data":"nil", p->appendsize);
 		}else if(tag == Tdentry){
-			readname(p->d, p->d->preli, &name, &namelen);
+/*	cannot do this here -- It causes a deadlock
+			pdbuf = egetmetachk(p->d->pdblkno, Breadonly, Tdentry, p->d->pqpath);
+			if(waserror()){
+				putbuf(pdbuf, 0);
+				nexterror();
+			}
+			pd = pdbuf->d;
+			readname(pd, p->d->preli, &name, &namelen);
 			n = snprint(buf, nbuf, "%s %llud %s %lluds %s %s %llud\n",
 					tagnames[tag], p->blkno, name, (nsec()-p->atime)/Nsec,
 					locked, p->append!=nil?"data":"nil", p->appendsize);
+			poperror();
+			putbuf(pdbuf, 0);
 			free(name);
+*/
+			n = snprint(buf, nbuf, "%s %llud %lluds %s %s %llud\n",
+					tagnames[tag], p->blkno, (nsec()-p->atime)/Nsec,
+					locked, p->append!=nil?"data":"nil", p->appendsize);
 		}else
 			n = snprint(buf, nbuf, "%s %llud %lluds %s\n",
 					tagnames[tag], p->blkno, (nsec()-p->atime)/Nsec, locked);
@@ -94,17 +111,21 @@
 	return n;
 }
 
-s32
-showhashbuckets(s8 *buf, s32 nbuf)
+u32
+showhashbuckets(s8 *buf, u32 nbuf)
 {
 	Iobuf *p;
 	Hiob *hp;
-	s32 n;
+	u32 n;
 	u64 i;
 
-	for(i = n = 0; i < nbuckets; i++){
+	for(n = 0, i = 0; i < nbuckets; i++){
 		hp=&hiob[i];
 		qlock(hp);
+			if(waserror()){
+				qunlock(hp);
+				nexterror();
+			}
 			if(hp->link != nil){
 				n += snprint(buf+n, nbuf-n, "i %llud ", i);
 				n += showhashbucket(hp->link, buf+n, nbuf-n);
@@ -115,6 +136,7 @@
 				}
 				// n+=snprint(buf+n,nbuf-n,"\n");
 			}
+		poperror();
 		qunlock(hp);
 	}
 	return n;
--- a/mafs.c
+++ b/mafs.c
@@ -31,10 +31,9 @@
 	char buf[Servicelen];
 	int pid, ctl;
 	u64 nmemunits, size;
-	Errenv env;
+	Errenv env = {0};
 
 	envpp = privalloc();
-	envpidx = _nprivates;	/* the index in _privates holding the Errenv location */
 	*envpp = &env;
 	if(waserror()){
 		panic(0, "err stack %d: %lux %lux %lux %lux %lux %lux",
--- a/names.c
+++ b/names.c
@@ -161,7 +161,6 @@
 u16
 addnamelen(Dentry *pd, u16 uid, u64 preli, s8 *name, u16 namelen)
 {
-	s8 *buf;
 	Extents *nes;
 	s8 esname[32];
 	u64 start, size;
@@ -187,24 +186,16 @@
 	loadextentsfile(pd->dblocks[Inle], pd->qpath+1+Inle, nes);
 
 	/* reusing */
-	buf = emalloc9p(nm.namelen);
-	if(waserror()){
-		free(buf);
-		nexterror();
-	}
-	strncpy(buf, name, nm.namelen);
 	if(ualloc(nes, namelen, &start)){
-		if(writefile(pd->dblocks[Inl], pd->qpath+1+Inl, uid, buf, nm.namelen, start) != namelen)
+		if(writefile(pd->dblocks[Inl], pd->qpath+1+Inl, uid, name, nm.namelen, start) != namelen)
 			error(errstring[Einvwrite]);
 		nm.noffset = start;
 		saveextentstofile(pd->dblocks[Inle], pd->qpath+1+Inle, uid, nes);
 	}else{
 		nm.noffset = size = readfilesize(pd->dblocks[Inl], pd->qpath+1+Inl);
-		if(writefile(pd->dblocks[Inl], pd->qpath+1+Inl, uid, buf, nm.namelen, size) != nm.namelen)
+		if(writefile(pd->dblocks[Inl], pd->qpath+1+Inl, uid, name, nm.namelen, size) != nm.namelen)
 			error(errstring[Einvwrite]);
 	}
-	poperror();
-	free(buf);
 	poperror();
 	freeextents(nes);
 	if(writefile(pd->dblocks[In], pd->qpath+1+In, uid,
--- a/reconcile.c
+++ b/reconcile.c
@@ -65,10 +65,9 @@
 {
 	Stream u, f;	/* u = used, f = free */
 	u64 nblocks;
-	Errenv env;
+	Errenv env = {0};
 
 	envpp = privalloc();
-	envpidx = _nprivates;	/* the index in _privates holding the Errenv location */
 	*envpp = &env;
 	if(waserror()){
 		panic(0, "err stack %d: %lux %lux %lux %lux %lux %lux",
--- a/tests/chkflush.rc
+++ b/tests/chkflush.rc
@@ -5,7 +5,7 @@
 dd -if /dev/zero -of flush/disk -bs 512 -count 64
 mount -c <{disk/mafs -s -r test.flush flush/disk <[0=1]} /n/mfs_test.flush
 > /n/mfs_test.flush/4blocks.file {
-	# cat /n/mfs_test.flush/adm/ctl >/tmp//test.flush.file
+	# cat /n/mfs_test.flush/a/ctl >/tmp//test.flush.file
 	cat flush/2_blocks.file
 	sleep 15
 	cat flush/2_blocks.file
@@ -12,10 +12,10 @@
 	sleep 15
 }
 # cat /tmp//test.flush.file
-# cat /n/mfs_test.flush/adm/ctl
-echo sync >> /n/mfs_test.flush/adm/ctl
-cat /n/mfs_test.flush/adm/ctl
+# cat /n/mfs_test.flush/a/ctl
+echo sync >> /n/mfs_test.flush/a/ctl
+cat /n/mfs_test.flush/a/ctl
 sleep 1
 echo '-------sending halt------------'
-echo halt >> /n/mfs_test.flush/adm/ctl
+echo halt >> /n/mfs_test.flush/a/ctl
 
--- a/tests/regress.rc
+++ b/tests/regress.rc
@@ -35,8 +35,8 @@
 	test -f $test^/action.rc && $test^/action.rc $service $disk
 
 	# tear it down
-	test -f /n/^$service^/adm/ctl && {
-		echo halt >> /n/^$service^/adm/ctl
+	test -f /n/^$service^/a/ctl && {
+		echo halt >> /n/^$service^/a/ctl
 	}
 	unmount /n/^$service
 	test -f /srv/^$test && rm /srv/^$test
@@ -77,8 +77,8 @@
 	test -f $test^/action.rc && $test^/action.rc $service $disk
 
 	# tear it down
-	test -f /n/^$service^/adm/ctl && {
-		echo halt >> /n/^$service^/adm/ctl
+	test -f /n/^$service^/a/ctl && {
+		echo halt >> /n/^$service^/a/ctl
 	}
 	unmount /n/^$service
 	test -f /srv/^$test && rm /srv/^$test
@@ -91,7 +91,6 @@
 
 if(~ $#* 0){
 	chkreli.rc
-	chkextents.rc
 	chkflush.rc
 	chknlastdatablocks.rc
 	for (t in test.*){
--- a/tests/test.0/notes
+++ b/tests/test.0/notes
@@ -30,6 +30,6 @@
 21		- / dir names entry
 22		- / dir names extents entry
 
-26	- /a/bkp/root.0 dir entry
-28	- /a/bkp/super.0 dir entry
-30	- /a/bkp/config.0 dir entry
+29	- /a/bkp/root.0 dir entry
+30	- /a/bkp/super.0 dir entry
+31	- /a/bkp/config.0 dir entry
--- a/unused.c
+++ b/unused.c
@@ -78,10 +78,9 @@
 	struct Extents unused;
 	u64 nblocks;
 	int listblocks = 0;
-	Errenv env;
+	Errenv env = {0};
 
 	envpp = privalloc();
-	envpidx = _nprivates;	/* the index in _privates holding the Errenv location */
 	*envpp = &env;
 	if(waserror()){
 		panic(0, "err stack %d: %lux %lux %lux %lux %lux %lux",
--- a/updatefrees.c
+++ b/updatefrees.c
@@ -40,10 +40,9 @@
 	Data *f;
 	Dentry *d;
 	u64 *f64;
-	Errenv env;
+	Errenv env = {0};
 
 	envpp = privalloc();
-	envpidx = _nprivates;	/* the index in _privates holding the Errenv location */
 	*envpp = &env;
 	if(waserror()){
 		panic(0, "err stack %d: %lux %lux %lux %lux %lux %lux",
--- a/used.c
+++ b/used.c
@@ -40,10 +40,9 @@
 main(int argc, char *argv[])
 {
 	u64 size;
-	Errenv env;
+	Errenv env = {0};
 
 	envpp = privalloc();
-	envpidx = _nprivates;	/* the index in _privates holding the Errenv location */
 	*envpp = &env;
 	if(waserror()){
 		panic(0, "err stack %d: %lux %lux %lux %lux %lux %lux",