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ptrace_detach when exiting

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refs #590
This commit is contained in:
Tomoki Shirasawa
2015-08-18 18:03:09 +09:00
parent 9fa62adfe7
commit 5a0cd3f53f
1 changed files with 28 additions and 0 deletions
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28
kernel/syscall.c
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@ -105,6 +105,7 @@ int patch_process_vm(struct process_vm *, void *, const void *, size_t);
void do_setpgid(int, int);
extern long alloc_debugreg(struct process *proc);
extern int num_processors;
static int ptrace_detach(int pid, int data);
int prepare_process_ranges_args_envs(struct process *proc,
struct program_load_desc *pn,
@ -633,8 +634,35 @@ terminate(int rc, int sig, ihk_mc_user_context_t *ctx)
struct fork_tree_node *ftn = proc->ftn;
struct fork_tree_node *child, *next;
struct process *parent_owner;
int ntracee;
int *tracee = NULL;
int i;
int error;
// check tracee and ptrace detach
ntracee = 0;
ihk_mc_spinlock_lock_noirq(&ftn->lock);
list_for_each_entry(child, &ftn->ptrace_children, ptrace_siblings_list) {
ntracee++;
}
if(ntracee){
tracee = kmalloc(sizeof(int) * ntracee, IHK_MC_AP_NOWAIT);
i = 0;
if(tracee){
list_for_each_entry(child, &ftn->ptrace_children, ptrace_siblings_list) {
tracee[i] = child->pid;
i++;
}
}
}
ihk_mc_spinlock_unlock_noirq(&ftn->lock);
if(tracee){
for(i = 0; i < ntracee; i++){
ptrace_detach(tracee[i], 0);
}
kfree(tracee);
}
dkprintf("terminate,pid=%d\n", proc->ftn->pid);
request.number = __NR_exit_group;
request.args[0] = ((rc & 0x00ff) << 8) | (sig & 0xff);