Date: Mon, 19 Sep 2011 15:00:31 +0000 (UTC) From: Anton Yuzhaninov <citrin@citrin.ru> To: freebsd-current@freebsd.org Subject: Re: truss Message-ID: <j57lef$a3d$1@dough.gmane.org> References: <4E5E46A4.3060705@citrin.ru> <4E6A99A9.1000204@delphij.net> <j4pgu9$m94$1@dough.gmane.org> <864o0adkva.fsf@kopusha.home.net> <j57bm4$3lk$1@dough.gmane.org> <86mxe0r8o5.fsf@in138.ua3>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 19 Sep 2011 15:58:02 +0300, Mikolaj Golub wrote: AY>> ktrace -i for truss sleep 5 AY>> http://dl.dropbox.com/u/8798217/tmp/truss_ktrace2.txt MG> MG> Although ptrace(PT_TRACE_ME,0,0,0) returned 0 the process did not stop after MG> execve() and wait4() in parent (which was actually waiting for this stop) MG> returned only after the child exit. No I idea why so far :-). MG> As I understand SIGTRAP used to stop child process after execve(), but this signal ignored: citrin:~> sleep 300 & citrin:~> procstat -i 1991 | fgrep TRAP 1991 sleep TRAP -I- Under FreeBSD 8, where ptrace works for me, this signal is not ignored: x:~> sleep 300 & x:~> procstat -i 78716 | fgrep TRAP 78716 sleep TRAP --- -- Anton Yuzhaninov
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?j57lef$a3d$1>