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1 #include <u.h>2 #include <libc.h>3 #include "9proc.h"5 static Lock privlock;6 static ulong privmap;8 int9 privalloc(void)10 {11 int i;13 lock(&privlock);14 for(i=0; i<NPRIV; i++)15 if((privmap&(1<<i)) == 0){16 privmap |= (1<<i);17 unlock(&privlock);18 return i;19 }20 unlock(&privlock);21 return -1;22 }24 void**25 privmem(int i)26 {27 Uproc *up;29 up = _p9uproc(0);30 return &up->priv[i];31 }