Attachment 148952 Details for Bug 230423 – A test c program that demonstrates the bug.

A test c program that demonstrates the bug.

ptraceTest.c (text/plain), 1.02 KB, created by Kevin Van Brunt on 2007-02-28 19:41:19 UTC

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Filename:

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Creator: Kevin Van Brunt

Created: 2007-02-28 19:41:19 UTC

Size: 1.02 KB

patch

obsolete

>#include <sys/ptrace.h>
>#include <stdio.h>
>#include <sys/wait.h>
>#include <errno.h>
>
>int main()
>{
>	char* args[2] = {"/bin/ls", 0};
>	pid_t pid = 0;
>	int waitVal = 0;
>
>	switch (pid = fork())
>	{
>		case -1:
>			perror("Error forking");
>			break;
>
>		case 0:
>			ptrace(PTRACE_TRACEME, 0, 0, 0);
>			execv(args[0], args);
>			break;
>
>		default:
>			break;
>	}
>
>	while (1)
>	{
>		// Wait for signal
>		pid_t signaledTid = waitpid(-1, &waitVal, WUNTRACED | __WALL);
>
>		// Error occurred with waitpid
>		if (signaledTid == -1)
>		{
>			// No more children for this process.  Stop debugging
>			if (errno == ECHILD)
>			{
>				break;
>			}
>
>			else
>			{
>				continue;
>			}
>		}
>
>		// This signal is not stopping the process
>		if (!WIFSTOPPED(waitVal))
>		{
>			continue;
>		}
>
>		// Figure out what signal stopped the process
>		int sigVal = WSTOPSIG(waitVal);
>
>		switch (sigVal)
>		{
>			case SIGSEGV:
>				printf("GOT SIGSEGV\n");
>				break;
>		}
>
>		// Sending SIGKILL to traced program
>		kill(signaledTid, SIGKILL);
>
>		ptrace(PTRACE_CONT, signaledTid, 0, sigVal);
>	}
>
>	return 0;
>}

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Attachments on bug 230423: 148952