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make PTRACE_POKETEXT use patch_process_vm()

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NAKAMURA Gou
2015-03-03 19:38:51 +09:00
parent 2eac58aab3
commit 9ad48083aa
1 changed files with 3 additions and 10 deletions
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13
kernel/syscall.c
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@@ -101,6 +101,7 @@ extern struct sigpending *hassigpending(struct process *proc);
int copy_from_user(void *, const void *, size_t); int copy_from_user(void *, const void *, size_t);
int read_process_vm(struct process_vm *, void *, const void *, size_t); int read_process_vm(struct process_vm *, void *, const void *, size_t);
int copy_to_user(void *, const void *, size_t); int copy_to_user(void *, const void *, size_t);
int patch_process_vm(struct process_vm *, void *, const void *, size_t);
void do_setpgid(int, int); void do_setpgid(int, int);
extern long alloc_debugreg(struct process *proc); extern long alloc_debugreg(struct process *proc);
@@ -2942,18 +2943,10 @@ static long ptrace_poketext(int pid, long addr, long data)
if (!child) if (!child)
return -ESRCH; return -ESRCH;
if(child->ftn->status == PS_TRACED){ if(child->ftn->status == PS_TRACED){
#if 0 rc = patch_process_vm(child->vm, (void *)addr, &data, sizeof(data));
/* XXX: revisit here, when fix #401. if (rc) {
* if read only, copy-on-write */
#else
unsigned long phys;
rc = ihk_mc_pt_virt_to_phys(child->vm->page_table, (void *)addr, &phys);
if (rc != 0) {
dkprintf("ptrace_poketext: bad address 0x%llx\n", addr); dkprintf("ptrace_poketext: bad address 0x%llx\n", addr);
} else {
*((long *)phys_to_virt(phys)) = data;
} }
#endif
} }
ihk_mc_spinlock_unlock(savelock, irqstate); ihk_mc_spinlock_unlock(savelock, irqstate);