shithub: clone

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fix free of non-malloc'd pointer

--- a/clone.c

+++ b/clone.c

@@ -264,9 +264,11 @@

 void

 clone(char *src, char *dst)

 {

+	char *dn;

 	Dir *sd, *dd;

 	File *f;

+	dn = estrdup(dst);

 	dd = nil;

 	sd = dirstat(src);

 	if(sd == nil){

@@ -273,14 +275,14 @@

 		error("can't stat: %r");

 		return;

 	}

-	if(access(dst, AEXIST) >= 0){

-		dd = dirstat(dst);

+	if(access(dn, AEXIST) >= 0){

+		dd = dirstat(dn);

 		if(dd == nil){

 			error("can't stat: %r");

 			goto End;

 		}

 	}else if(multisrc){

-		if(mkdir(src, dst, sd, &dd) < 0)

+		if(mkdir(src, dn, sd, &dd) < 0)

 			goto End;

 		skipdir = dd;

 	}

@@ -288,8 +290,8 @@

 	/* clone a file */

 	if(!(sd->mode & DMDIR)){

 		if(dd && dd->mode & DMDIR)

-			dst = smprint("%s/%s", dst, filename(src));

-		f = filenew(src, dst, sd);

+				dn = smprint("%s/%s", dn, filename(src));

+		f = filenew(src, dn, sd);

 		sendp(filechan, f);

 		goto End;

 	}

@@ -296,19 +298,20 @@

 	/* clone a directory */

 	if(dd)

-		dst = smprint("%s/%s", dst, filename(src));

+		dn = smprint("%s/%s", dn, filename(src));

 	if(skipdir){

-		if(mkdir(src, dst, sd, nil) < 0)

+		if(mkdir(src, dn, sd, nil) < 0)

 			goto End;

 	}else{

-		if(mkdir(src, dst, sd, &skipdir) < 0)

+		if(mkdir(src, dn, sd, &skipdir) < 0)

 			goto End;

 	}

-	clonedir(src, dst);

+	clonedir(src, dn);

 End:

-	if(dd) free(dst);

-	free(sd); free(dd);

+	free(dn);

+	free(sd);

+	free(dd);

 }

 void

@@ -422,6 +425,8 @@

 	char *buf;

 	File *f;

 	Blk *b;

+	

+	threadsetname("blkproc");

 	buf = emalloc(blksz);

 	for(;;){

@@ -451,6 +456,8 @@

 {

 	File *f;

 	WaitGroup *wg;

+	

+	threadsetname("fileproc");

 	wg = v;

 	for(;;){