134 lines
2.8 KiB
C
134 lines
2.8 KiB
C
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/*-
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* Copyright (c) 2008 John Birrell (jb@freebsd.org)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "_libproc.h"
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#include <errno.h>
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#include <unistd.h>
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#include <sys/ptrace.h>
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#include <sys/wait.h>
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#include <stdio.h>
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int
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proc_clearflags(struct proc_handle *phdl, int mask)
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{
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if (phdl == NULL)
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return (EINVAL);
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phdl->flags &= ~mask;
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return (0);
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}
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int
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proc_continue(struct proc_handle *phdl)
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{
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if (phdl == NULL)
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return (EINVAL);
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if (ptrace(PT_CONTINUE, phdl->pid, (caddr_t)(uintptr_t) 1, 0) != 0)
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return (errno);
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phdl->status = PS_RUN;
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return (0);
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}
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int
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proc_detach(struct proc_handle *phdl)
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{
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if (phdl == NULL)
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return (EINVAL);
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if (ptrace(PT_DETACH, phdl->pid, 0, 0) != 0)
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return (errno);
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return (0);
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}
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int
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proc_getflags(struct proc_handle *phdl)
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{
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if (phdl == NULL)
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return (-1);
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return(phdl->flags);
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}
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int
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proc_setflags(struct proc_handle *phdl, int mask)
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{
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if (phdl == NULL)
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return (EINVAL);
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phdl->flags |= mask;
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return (0);
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}
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int
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proc_state(struct proc_handle *phdl)
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{
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if (phdl == NULL)
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return (-1);
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return (phdl->status);
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}
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int
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proc_wait(struct proc_handle *phdl)
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{
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int status = 0;
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struct kevent kev;
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if (phdl == NULL)
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return (EINVAL);
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if (kevent(phdl->kq, NULL, 0, &kev, 1, NULL) <= 0)
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return (0);
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switch (kev.filter) {
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/* Child has exited */
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case EVFILT_PROC: /* target has exited */
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phdl->status = PS_UNDEAD;
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break;
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default:
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break;
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}
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return (status);
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}
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pid_t
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proc_getpid(struct proc_handle *phdl)
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{
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if (phdl == NULL)
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return (-1);
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return (phdl->pid);
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}
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