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#include <u.h>
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#include <libc.h>
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#include <auth.h>
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#include <fcall.h>
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#include <thread.h>
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#include "9p.h"
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static void
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incfidref(void *v)
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{
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	Fid *f;
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	f = v;
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	if(f)
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		incref(&f->ref);
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}
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Fidpool*
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allocfidpool(void (*destroy)(Fid*))
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{
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	Fidpool *f;
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	f = emalloc9p(sizeof *f);
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	f->map = allocmap(incfidref);
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	f->destroy = destroy;
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	return f;
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}
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void
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freefidpool(Fidpool *p)
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{
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	freemap(p->map, (void(*)(void*))p->destroy);
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	free(p);
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}
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Fid*
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allocfid(Fidpool *pool, ulong fid)
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{
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	Fid *f;
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	f = emalloc9p(sizeof *f);
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	f->fid = fid;
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	f->omode = -1;
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	f->pool = pool;
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	incfidref(f);
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	incfidref(f);
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	if(caninsertkey(pool->map, fid, f) == 0){
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		closefid(f);
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		closefid(f);
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		return nil;
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	}
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	return f;
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}
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Fid*
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lookupfid(Fidpool *pool, ulong fid)
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{
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	return lookupkey(pool->map, fid);
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}
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void
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closefid(Fid *f)
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{
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	if(decref(&f->ref) == 0) {
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		if(f->rdir)
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			closedirfile(f->rdir);
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		if(f->pool->destroy)
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			f->pool->destroy(f);
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		if(f->file)
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			closefile(f->file);
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		free(f->uid);
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		free(f);
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	}
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}
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Fid*
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removefid(Fidpool *pool, ulong fid)
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{
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	return deletekey(pool->map, fid);
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}