diff options
| author | davidxu <davidxu@FreeBSD.org> | 2005-11-08 23:28:12 +0000 |
|---|---|---|
| committer | davidxu <davidxu@FreeBSD.org> | 2005-11-08 23:28:12 +0000 |
| commit | e4f3a40860ca49e8859564345e25e470360e3235 (patch) | |
| tree | 589fc6e6ad861ab0172bddb7bf401960ea3991dc /sys/kern/sys_process.c | |
| parent | 066b259890e4fbc852c3f553652301b443fca6b5 (diff) | |
| download | FreeBSD-src-e4f3a40860ca49e8859564345e25e470360e3235.zip FreeBSD-src-e4f3a40860ca49e8859564345e25e470360e3235.tar.gz | |
Make sure pending SIGCHLD is removed from previous parent when process
is attached or detached.
Diffstat (limited to 'sys/kern/sys_process.c')
| -rw-r--r-- | sys/kern/sys_process.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c index f1157ca..0176525 100644 --- a/sys/kern/sys_process.c +++ b/sys/kern/sys_process.c @@ -673,8 +673,12 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) /* security check done above */ p->p_flag |= P_TRACED; p->p_oppid = p->p_pptr->p_pid; - if (p->p_pptr != td->td_proc) + if (p->p_pptr != td->td_proc) { + PROC_LOCK(p->p_pptr); + sigqueue_take(p->p_ksi); + PROC_UNLOCK(p->p_pptr); proc_reparent(p, td->td_proc); + } data = SIGSTOP; goto sendsig; /* in PT_CONTINUE below */ @@ -765,6 +769,10 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) if (p->p_oppid != p->p_pptr->p_pid) { struct proc *pp; + PROC_LOCK(p->p_pptr); + sigqueue_take(p->p_ksi); + PROC_UNLOCK(p->p_pptr); + PROC_UNLOCK(p); pp = pfind(p->p_oppid); if (pp == NULL) @@ -780,6 +788,7 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) p->p_oppid = 0; /* should we send SIGCHLD? */ + /* childproc_continued(p); */ } sendsig: |
