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ptrace: restructure comments around reparenting on PT_DETACH

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style code, and use {} for both branches.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2021-04-11 12:06:21 +03:00
parent 9d7e450b64
commit a091c35323
1 changed files with 8 additions and 4 deletions
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12
sys/kern/sys_process.c
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@ -1005,14 +1005,16 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data)
break;
case PT_DETACH:
/*
* Reset the process parent.
*
* NB: This clears P_TRACED before reparenting
* Clear P_TRACED before reparenting
* a detached process back to its original
* parent. Otherwise the debugee will be set
* as an orphan of the debugger.
*/
p->p_flag &= ~(P_TRACED | P_WAITED);
/*
* Reset the process parent.
*/
if (p->p_oppid != p->p_pptr->p_pid) {
PROC_LOCK(p->p_pptr);
sigqueue_take(p->p_ksi);
@ -1025,9 +1027,11 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data)
CTR3(KTR_PTRACE,
"PT_DETACH: pid %d reparented to pid %d, sig %d",
p->p_pid, pp->p_pid, data);
} else
} else {
CTR2(KTR_PTRACE, "PT_DETACH: pid %d, sig %d",
p->p_pid, data);
}
p->p_ptevents = 0;
FOREACH_THREAD_IN_PROC(p, td3) {
if ((td3->td_dbgflags & TDB_FSTP) != 0) {