diff options
-rw-r--r-- | sysproc.c | 7 |
1 files changed, 6 insertions, 1 deletions
@@ -1,4 +1,5 @@ #include "types.h" +#include "x86.h" #include "defs.h" #include "param.h" #include "mmu.h" @@ -13,6 +14,9 @@ sys_fork(void) if((np = copyproc(cp)) == 0) return -1; pid = np->pid; + + // Clear %eax so that fork returns 0 in the child. + np->tf->eax = 0; np->state = RUNNABLE; return pid; } @@ -54,7 +58,8 @@ sys_sbrk(void) if(argint(0, &n) < 0) return -1; - if((addr = growproc(n)) < 0) + addr = cp->sz; + if(growproc(n) < 0) return -1; return addr; } |