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support execute disabled stack

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NAKAMURA Gou
2014-04-08 20:22:55 +09:00
parent b31a1b6db2
commit 39a86fad18
4 changed files with 11 additions and 2 deletions
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1
kernel/include/syscall.h
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@@ -109,6 +109,7 @@ struct program_load_desc {
int cpu;
int pid;
int err;
int stack_prot;
unsigned long entry;
unsigned long user_start;
unsigned long user_end;

4
kernel/process.c
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@@ -1333,8 +1333,8 @@ int init_process_stack(struct process *process, struct program_load_desc *pn,
start = end - size;
vrflag = VR_STACK | VR_DEMAND_PAGING;
vrflag |= VR_PROT_READ | VR_PROT_WRITE | VR_PROT_EXEC;
vrflag |= VRFLAG_PROT_TO_MAXPROT(vrflag);
vrflag |= PROT_TO_VR_FLAG(pn->stack_prot);
vrflag |= VR_MAXPROT_READ | VR_MAXPROT_WRITE | VR_MAXPROT_EXEC;
#define NOPHYS ((uintptr_t)-1)
if ((rc = add_process_memory_range(process, start, end, NOPHYS,
vrflag, NULL, 0)) != 0) {