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missed this file in last checkin

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rsc 2009-05-31 00:31:20 +00:00
parent 19333efb9e
commit dae9b0d48a
1 changed files with 6 additions and 1 deletions
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7
sysproc.c
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@ -1,4 +1,5 @@
#include "types.h" #include "types.h"
#include "x86.h"
#include "defs.h" #include "defs.h"
#include "param.h" #include "param.h"
#include "mmu.h" #include "mmu.h"
@ -13,6 +14,9 @@ sys_fork(void)
if((np = copyproc(cp)) == 0) if((np = copyproc(cp)) == 0)
return -1; return -1;
pid = np->pid; pid = np->pid;
// Clear %eax so that fork returns 0 in the child.
np->tf->eax = 0;
np->state = RUNNABLE; np->state = RUNNABLE;
return pid; return pid;
} }
@ -54,7 +58,8 @@ sys_sbrk(void)
if(argint(0, &n) < 0) if(argint(0, &n) < 0)
return -1; return -1;
if((addr = growproc(n)) < 0) addr = cp->sz;
if(growproc(n) < 0)
return -1; return -1;
return addr; return addr;
} }