diff options
| author | Marcel Moolenaar <marcel@FreeBSD.org> | 2004-07-12 05:07:50 +0000 |
|---|---|---|
| committer | Marcel Moolenaar <marcel@FreeBSD.org> | 2004-07-12 05:07:50 +0000 |
| commit | fbc3247d816a6c4c77324fdbd4e9188abc46aabe (patch) | |
| tree | 354f543bfcbe27c384ccc9ed5c1d36a3fc6a26d1 /sys/kern/sys_process.c | |
| parent | 98c151d6d952b5bc9e0142eb5d08b9e18d661b99 (diff) | |
Notes
Diffstat (limited to 'sys/kern/sys_process.c')
| -rw-r--r-- | sys/kern/sys_process.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c index f65b67c75a74b..0cae07b970c56 100644 --- a/sys/kern/sys_process.c +++ b/sys/kern/sys_process.c @@ -305,6 +305,7 @@ ptrace(struct thread *td, struct ptrace_args *uap) */ union { struct ptrace_io_desc piod; + struct ptrace_lwpinfo pl; struct dbreg dbreg; struct fpreg fpreg; struct reg reg; @@ -317,6 +318,7 @@ ptrace(struct thread *td, struct ptrace_args *uap) case PT_GETREGS: case PT_GETFPREGS: case PT_GETDBREGS: + case PT_LWPINFO: break; case PT_SETREGS: error = copyin(uap->addr, &r.reg, sizeof r.reg); @@ -354,6 +356,9 @@ ptrace(struct thread *td, struct ptrace_args *uap) case PT_GETDBREGS: error = copyout(&r.dbreg, uap->addr, sizeof r.dbreg); break; + case PT_LWPINFO: + error = copyout(&r.pl, uap->addr, uap->data); + break; } return (error); @@ -367,6 +372,7 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) struct proc *curp, *p, *pp; struct thread *td2 = NULL; struct ptrace_io_desc *piod; + struct ptrace_lwpinfo *pl; int error, write, tmp; int proctree_locked = 0; lwpid_t tid = 0; @@ -606,6 +612,7 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) /* deliver or queue signal */ if (P_SHOULDSTOP(p)) { p->p_xstat = data; + p->p_xlwpid = 0; p->p_flag &= ~(P_STOPPED_TRACE|P_STOPPED_SIG); mtx_lock_spin(&sched_lock); thread_unsuspend(p); @@ -727,6 +734,17 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data) PROC_UNLOCK(p); return (error); + case PT_LWPINFO: + if (data == 0 || data > sizeof(*pl)) + return (EINVAL); + pl = addr; + _PHOLD(p); + pl->pl_lwpid = p->p_xlwpid; + _PRELE(p); + PROC_UNLOCK(p); + pl->pl_event = PL_EVENT_SIGNAL; + return (0); + default: #ifdef __HAVE_PTRACE_MACHDEP if (req >= PT_FIRSTMACH) { @@ -764,6 +782,7 @@ stopevent(struct proc *p, unsigned int event, unsigned int val) p->p_step = 1; do { p->p_xstat = val; + p->p_xlwpid = 0; p->p_stype = event; /* Which event caused the stop? */ wakeup(&p->p_stype); /* Wake up any PIOCWAIT'ing procs */ msleep(&p->p_step, &p->p_mtx, PWAIT, "stopevent", 0); |