57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
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/*
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* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sched.h>
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#include <errno.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include "kern_util.h"
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#include "user.h"
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#include "ptrace_user.h"
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#include "os.h"
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void do_exec(int old_pid, int new_pid)
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{
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unsigned long regs[FRAME_SIZE];
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int err;
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if((ptrace(PTRACE_ATTACH, new_pid, 0, 0) < 0) ||
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(ptrace(PTRACE_CONT, new_pid, 0, 0) < 0))
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tracer_panic("do_exec failed to attach proc - errno = %d",
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errno);
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CATCH_EINTR(err = waitpid(new_pid, 0, WUNTRACED));
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if (err < 0)
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tracer_panic("do_exec failed to attach proc in waitpid - errno = %d",
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errno);
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if(ptrace_getregs(old_pid, regs) < 0)
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tracer_panic("do_exec failed to get registers - errno = %d",
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errno);
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os_kill_ptraced_process(old_pid, 0);
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if (ptrace(PTRACE_OLDSETOPTIONS, new_pid, 0, (void *)PTRACE_O_TRACESYSGOOD) < 0)
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tracer_panic("do_exec: PTRACE_SETOPTIONS failed, errno = %d", errno);
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if(ptrace_setregs(new_pid, regs) < 0)
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tracer_panic("do_exec failed to start new proc - errno = %d",
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errno);
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}
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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