Date: 09 Feb 2002 20:22:23 +0100 From: Dag-Erling Smorgrav <des@ofug.org> To: Zhihui Zhang <zzhang@cs.binghamton.edu> Cc: freebsd-hackers@freebsd.org Subject: Re: Ptrace and SIGTRAP problem Message-ID: <xzpu1sqzci8.fsf@flood.ping.uio.no> In-Reply-To: <Pine.SOL.4.21.0202051400500.14264-100000@onyx> References: <Pine.SOL.4.21.0202051400500.14264-100000@onyx>
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Zhihui Zhang <zzhang@cs.binghamton.edu> writes: > The following small program demonstrates that a parent process can write > into the data space of its child by ptrace(). If the parent waits for the > child to exit, there is no problem. However, if the parent does not do so, > the child will get a SIGTRAP signal and core dumps. Can anyone give me a > clue how this is the case? Thanks! The parent must either detach from the child, or wait for it to terminate. See ptrace(2). DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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