8451d0dd78
patch modifies makesyscalls.sh to prefix all of the non-compatibility calls (e.g. not linux_, freebsd32_) with sys_ and updates the kernel entry points and all places in the code that use them. It also fixes an additional name space collision between the kernel function psignal and the libc function of the same name by renaming the kernel psignal kern_psignal(). By introducing this change now we will ease future MFCs that change syscalls. Reviewed by: rwatson Approved by: re (bz)
221 lines
5.6 KiB
C
221 lines
5.6 KiB
C
/*-
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* Copyright (c) 2001 Dag-Erling Coïdan Smørgrav
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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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* in this position and unchanged.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "opt_compat.h"
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/pioctl.h>
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#include <sys/priv.h>
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#include <sys/proc.h>
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#include <sys/signalvar.h>
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#include <sys/systm.h>
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#include <fs/pseudofs/pseudofs.h>
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#include <fs/procfs/procfs.h>
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#ifdef COMPAT_FREEBSD32
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struct procfs_status32 {
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int state; /* Running, stopped, something else? */
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int flags; /* Any flags */
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unsigned int events; /* Events to stop on */
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int why; /* What event, if any, proc stopped on */
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unsigned int val; /* Any extra data */
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};
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#define PIOCWAIT32 _IOR('p', 4, struct procfs_status32)
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#define PIOCSTATUS32 _IOR('p', 6, struct procfs_status32)
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#endif
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/*
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* Process ioctls
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*/
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int
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procfs_ioctl(PFS_IOCTL_ARGS)
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{
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struct procfs_status *ps;
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#ifdef COMPAT_FREEBSD32
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struct procfs_status32 *ps32;
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#endif
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int error, flags, sig;
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#ifdef COMPAT_FREEBSD6
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int ival;
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#endif
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KASSERT(p != NULL,
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("%s() called without a process", __func__));
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PROC_LOCK_ASSERT(p, MA_OWNED);
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error = 0;
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switch (cmd) {
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#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
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case _IOC(IOC_IN, 'p', 1, 0):
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#endif
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#ifdef COMPAT_FREEBSD6
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case _IO('p', 1):
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ival = IOCPARM_IVAL(data);
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data = &ival;
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#endif
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case PIOCBIS:
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p->p_stops |= *(unsigned int *)data;
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break;
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#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
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case _IOC(IOC_IN, 'p', 2, 0):
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#endif
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#ifdef COMPAT_FREEBSD6
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case _IO('p', 2):
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ival = IOCPARM_IVAL(data);
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data = &ival;
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#endif
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case PIOCBIC:
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p->p_stops &= ~*(unsigned int *)data;
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break;
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#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
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case _IOC(IOC_IN, 'p', 3, 0):
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#endif
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#ifdef COMPAT_FREEBSD6
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case _IO('p', 3):
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ival = IOCPARM_IVAL(data);
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data = &ival;
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#endif
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case PIOCSFL:
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flags = *(unsigned int *)data;
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if (flags & PF_ISUGID) {
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/*
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* XXXRW: Is this specific check required here, as
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* p_candebug() should implement it, or other checks
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* are missing.
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*/
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error = priv_check(td, PRIV_DEBUG_SUGID);
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if (error)
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break;
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}
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p->p_pfsflags = flags;
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break;
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case PIOCGFL:
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*(unsigned int *)data = p->p_pfsflags;
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break;
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case PIOCWAIT:
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while (p->p_step == 0 && (p->p_flag & P_WEXIT) == 0) {
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/* sleep until p stops */
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_PHOLD(p);
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error = msleep(&p->p_stype, &p->p_mtx,
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PWAIT|PCATCH, "pioctl", 0);
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_PRELE(p);
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if (error != 0)
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break;
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}
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/* fall through to PIOCSTATUS */
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case PIOCSTATUS:
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ps = (struct procfs_status *)data;
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ps->state = (p->p_step == 0);
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ps->flags = 0; /* nope */
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ps->events = p->p_stops;
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ps->why = p->p_step ? p->p_stype : 0;
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ps->val = p->p_step ? p->p_xstat : 0;
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break;
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#ifdef COMPAT_FREEBSD32
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case PIOCWAIT32:
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while (p->p_step == 0 && (p->p_flag & P_WEXIT) == 0) {
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/* sleep until p stops */
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_PHOLD(p);
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error = msleep(&p->p_stype, &p->p_mtx,
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PWAIT|PCATCH, "pioctl", 0);
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_PRELE(p);
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if (error != 0)
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break;
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}
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/* fall through to PIOCSTATUS32 */
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case PIOCSTATUS32:
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ps32 = (struct procfs_status32 *)data;
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ps32->state = (p->p_step == 0);
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ps32->flags = 0; /* nope */
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ps32->events = p->p_stops;
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ps32->why = p->p_step ? p->p_stype : 0;
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ps32->val = p->p_step ? p->p_xstat : 0;
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break;
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#endif
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#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
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case _IOC(IOC_IN, 'p', 5, 0):
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#endif
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#ifdef COMPAT_FREEBSD6
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case _IO('p', 5):
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ival = IOCPARM_IVAL(data);
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data = &ival;
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#endif
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case PIOCCONT:
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if (p->p_step == 0)
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break;
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sig = *(unsigned int *)data;
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if (sig != 0 && !_SIG_VALID(sig)) {
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error = EINVAL;
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break;
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}
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#if 0
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p->p_step = 0;
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if (P_SHOULDSTOP(p)) {
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p->p_xstat = sig;
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p->p_flag &= ~(P_STOPPED_TRACE|P_STOPPED_SIG);
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PROC_SLOCK(p);
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thread_unsuspend(p);
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PROC_SUNLOCK(p);
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} else if (sig)
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kern_psignal(p, sig);
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#else
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if (sig)
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kern_psignal(p, sig);
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p->p_step = 0;
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wakeup(&p->p_step);
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#endif
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break;
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default:
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error = (ENOTTY);
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}
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return (error);
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}
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/*
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* Clean up on last close
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*/
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int
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procfs_close(PFS_CLOSE_ARGS)
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{
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if (p != NULL && (p->p_pfsflags & PF_LINGER) == 0) {
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PROC_LOCK_ASSERT(p, MA_OWNED);
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p->p_pfsflags = 0;
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p->p_stops = 0;
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p->p_step = 0;
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wakeup(&p->p_step);
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}
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return (0);
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}
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