/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <auth.h>#include <fcall.h>#include <thread.h>#include "9p.h" static voidincfidref(void *v){	Fid *f; 	f = v;	if(f)		incref(&f->ref);} Fidpool*allocfidpool(void (*destroy)(Fid*)){	Fidpool *f; 	f = emalloc9p(sizeof *f);	f->map = allocmap(incfidref);	f->destroy = destroy;	return f;} voidfreefidpool(Fidpool *p){	freemap(p->map, (void(*)(void*))p->destroy);	free(p);} Fid*allocfid(Fidpool *pool, ulong fid){	Fid *f; 	f = emalloc9p(sizeof *f);	f->fid = fid;	f->omode = -1;	f->pool = pool; 	incfidref(f);	incfidref(f);	if(caninsertkey(pool->map, fid, f) == 0){		closefid(f);		closefid(f);		return nil;	} 	return f;} Fid*lookupfid(Fidpool *pool, ulong fid){	return lookupkey(pool->map, fid);} voidclosefid(Fid *f){	if(decref(&f->ref) == 0) {		if(f->rdir)			closedirfile(f->rdir);		if(f->pool->destroy)			f->pool->destroy(f);		if(f->file)			closefile(f->file);		free(f->uid);		free(f);	}} Fid*removefid(Fidpool *pool, ulong fid){	return deletekey(pool->map, fid);}