//==========================================================================
|
//==========================================================================
|
//
|
//
|
// sys/kern/sys_generic.c
|
// sys/kern/sys_generic.c
|
//
|
//
|
//
|
//
|
//
|
//
|
//==========================================================================
|
//==========================================================================
|
//####BSDCOPYRIGHTBEGIN####
|
//####BSDCOPYRIGHTBEGIN####
|
//
|
//
|
// -------------------------------------------
|
// -------------------------------------------
|
//
|
//
|
// Portions of this software may have been derived from OpenBSD or other sources,
|
// Portions of this software may have been derived from OpenBSD or other sources,
|
// and are covered by the appropriate copyright disclaimers included herein.
|
// and are covered by the appropriate copyright disclaimers included herein.
|
//
|
//
|
// -------------------------------------------
|
// -------------------------------------------
|
//
|
//
|
//####BSDCOPYRIGHTEND####
|
//####BSDCOPYRIGHTEND####
|
//==========================================================================
|
//==========================================================================
|
//#####DESCRIPTIONBEGIN####
|
//#####DESCRIPTIONBEGIN####
|
//
|
//
|
// Author(s): gthomas
|
// Author(s): gthomas
|
// Contributors: gthomas
|
// Contributors: gthomas
|
// Date: 2000-01-10
|
// Date: 2000-01-10
|
// Purpose:
|
// Purpose:
|
// Description:
|
// Description:
|
//
|
//
|
//
|
//
|
//####DESCRIPTIONEND####
|
//####DESCRIPTIONEND####
|
//
|
//
|
//==========================================================================
|
//==========================================================================
|
|
|
|
|
/* $OpenBSD: sys_generic.c,v 1.22 1999/11/29 22:02:14 deraadt Exp $ */
|
/* $OpenBSD: sys_generic.c,v 1.22 1999/11/29 22:02:14 deraadt Exp $ */
|
/* $NetBSD: sys_generic.c,v 1.24 1996/03/29 00:25:32 cgd Exp $ */
|
/* $NetBSD: sys_generic.c,v 1.24 1996/03/29 00:25:32 cgd Exp $ */
|
|
|
/*
|
/*
|
* Copyright (c) 1996 Theo de Raadt
|
* Copyright (c) 1996 Theo de Raadt
|
* Copyright (c) 1982, 1986, 1989, 1993
|
* Copyright (c) 1982, 1986, 1989, 1993
|
* The Regents of the University of California. All rights reserved.
|
* The Regents of the University of California. All rights reserved.
|
* (c) UNIX System Laboratories, Inc.
|
* (c) UNIX System Laboratories, Inc.
|
* All or some portions of this file are derived from material licensed
|
* All or some portions of this file are derived from material licensed
|
* to the University of California by American Telephone and Telegraph
|
* to the University of California by American Telephone and Telegraph
|
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
|
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
|
* the permission of UNIX System Laboratories, Inc.
|
* the permission of UNIX System Laboratories, Inc.
|
*
|
*
|
* Redistribution and use in source and binary forms, with or without
|
* Redistribution and use in source and binary forms, with or without
|
* modification, are permitted provided that the following conditions
|
* modification, are permitted provided that the following conditions
|
* are met:
|
* are met:
|
* 1. Redistributions of source code must retain the above copyright
|
* 1. Redistributions of source code must retain the above copyright
|
* notice, this list of conditions and the following disclaimer.
|
* notice, this list of conditions and the following disclaimer.
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* notice, this list of conditions and the following disclaimer in the
|
* notice, this list of conditions and the following disclaimer in the
|
* documentation and/or other materials provided with the distribution.
|
* documentation and/or other materials provided with the distribution.
|
* 3. All advertising materials mentioning features or use of this software
|
* 3. All advertising materials mentioning features or use of this software
|
* must display the following acknowledgement:
|
* must display the following acknowledgement:
|
* This product includes software developed by the University of
|
* This product includes software developed by the University of
|
* California, Berkeley and its contributors.
|
* California, Berkeley and its contributors.
|
* 4. Neither the name of the University nor the names of its contributors
|
* 4. Neither the name of the University nor the names of its contributors
|
* may be used to endorse or promote products derived from this software
|
* may be used to endorse or promote products derived from this software
|
* without specific prior written permission.
|
* without specific prior written permission.
|
*
|
*
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
* SUCH DAMAGE.
|
* SUCH DAMAGE.
|
*
|
*
|
* @(#)sys_generic.c 8.5 (Berkeley) 1/21/94
|
* @(#)sys_generic.c 8.5 (Berkeley) 1/21/94
|
*/
|
*/
|
|
|
#include <sys/param.h>
|
#include <sys/param.h>
|
#ifndef __ECOS
|
#ifndef __ECOS
|
#include <sys/systm.h>
|
#include <sys/systm.h>
|
#include <sys/filedesc.h>
|
#include <sys/filedesc.h>
|
#endif // __ECOS
|
#endif // __ECOS
|
#include <sys/ioctl.h>
|
#include <sys/ioctl.h>
|
#ifdef __ECOS
|
#ifdef __ECOS
|
#include <cyg/io/file.h>
|
#include <cyg/io/file.h>
|
#else // __ECOS
|
#else // __ECOS
|
#include <sys/file.h>
|
#include <sys/file.h>
|
#include <sys/proc.h>
|
#include <sys/proc.h>
|
#include <sys/resourcevar.h>
|
#include <sys/resourcevar.h>
|
#endif // __ECOS
|
#endif // __ECOS
|
#include <sys/socketvar.h>
|
#include <sys/socketvar.h>
|
#ifndef __ECOS
|
#ifndef __ECOS
|
#include <sys/signalvar.h>
|
#include <sys/signalvar.h>
|
#include <sys/kernel.h>
|
#include <sys/kernel.h>
|
#include <sys/uio.h>
|
#include <sys/uio.h>
|
#include <sys/stat.h>
|
#include <sys/stat.h>
|
#endif // __ECOS
|
#endif // __ECOS
|
#include <sys/malloc.h>
|
#include <sys/malloc.h>
|
#ifndef __ECOS
|
#ifndef __ECOS
|
#include <sys/poll.h>
|
#include <sys/poll.h>
|
#endif // __ECOS
|
#endif // __ECOS
|
#ifdef KTRACE
|
#ifdef KTRACE
|
#include <sys/ktrace.h>
|
#include <sys/ktrace.h>
|
#endif
|
#endif
|
|
|
#ifndef __ECOS
|
#ifndef __ECOS
|
#include <sys/mount.h>
|
#include <sys/mount.h>
|
#endif // __ECOS
|
#endif // __ECOS
|
#include <sys/syscallargs.h>
|
#include <sys/syscallargs.h>
|
|
|
#ifndef __ECOS
|
#ifndef __ECOS
|
int selscan __P((struct proc *, fd_set *, fd_set *, int, register_t *));
|
int selscan __P((struct proc *, fd_set *, fd_set *, int, register_t *));
|
int seltrue __P((dev_t, int, struct proc *));
|
int seltrue __P((dev_t, int, struct proc *));
|
void pollscan __P((struct proc *, struct pollfd *, int, register_t *));
|
void pollscan __P((struct proc *, struct pollfd *, int, register_t *));
|
#endif // __ECOS
|
#endif // __ECOS
|
|
|
/*
|
/*
|
* Read system call.
|
* Read system call.
|
*/
|
*/
|
#ifdef __ECOS
|
#ifdef __ECOS
|
int
|
int
|
sys_read(struct sys_read_args *uap, register_t *retval)
|
sys_read(struct sys_read_args *uap, register_t *retval)
|
#else
|
#else
|
/* ARGSUSED */
|
/* ARGSUSED */
|
int
|
int
|
sys_read(p, v, retval)
|
sys_read(p, v, retval)
|
struct proc *p;
|
struct proc *p;
|
void *v;
|
void *v;
|
register_t *retval;
|
register_t *retval;
|
#endif
|
#endif
|
{
|
{
|
#ifndef __ECOS
|
#ifndef __ECOS
|
register struct sys_read_args /* {
|
register struct sys_read_args /* {
|
syscallarg(int) fd;
|
syscallarg(int) fd;
|
syscallarg(void *) buf;
|
syscallarg(void *) buf;
|
syscallarg(size_t) nbyte;
|
syscallarg(size_t) nbyte;
|
} */ *uap = v;
|
} */ *uap = v;
|
register struct filedesc *fdp = p->p_fd;
|
register struct filedesc *fdp = p->p_fd;
|
#endif
|
#endif
|
struct file *fp;
|
struct file *fp;
|
struct uio auio;
|
struct uio auio;
|
struct iovec aiov;
|
struct iovec aiov;
|
long cnt, error = 0;
|
long cnt, error = 0;
|
#ifdef KTRACE
|
#ifdef KTRACE
|
struct iovec ktriov;
|
struct iovec ktriov;
|
#endif
|
#endif
|
|
|
#ifdef __ECOS
|
#ifdef __ECOS
|
if (getfp((u_int)SCARG(uap, fd), &fp) ||
|
if (getfp((u_int)SCARG(uap, fd), &fp) ||
|
#else
|
#else
|
if (((u_int)SCARG(uap, fd)) >= fdp->fd_nfiles ||
|
if (((u_int)SCARG(uap, fd)) >= fdp->fd_nfiles ||
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
|
#endif
|
#endif
|
(fp->f_flag & FREAD) == 0)
|
(fp->f_flag & FREAD) == 0)
|
return (EBADF);
|
return (EBADF);
|
/* Don't allow nbyte to be larger than max return val */
|
/* Don't allow nbyte to be larger than max return val */
|
if (SCARG(uap, nbyte) > SSIZE_MAX)
|
if (SCARG(uap, nbyte) > SSIZE_MAX)
|
return(EINVAL);
|
return(EINVAL);
|
aiov.iov_base = (caddr_t)SCARG(uap, buf);
|
aiov.iov_base = (caddr_t)SCARG(uap, buf);
|
aiov.iov_len = SCARG(uap, nbyte);
|
aiov.iov_len = SCARG(uap, nbyte);
|
auio.uio_iov = &aiov;
|
auio.uio_iov = &aiov;
|
auio.uio_iovcnt = 1;
|
auio.uio_iovcnt = 1;
|
auio.uio_resid = SCARG(uap, nbyte);
|
auio.uio_resid = SCARG(uap, nbyte);
|
auio.uio_rw = UIO_READ;
|
auio.uio_rw = UIO_READ;
|
auio.uio_segflg = UIO_USERSPACE;
|
auio.uio_segflg = UIO_USERSPACE;
|
#ifndef __ECOS
|
#ifndef __ECOS
|
auio.uio_procp = p;
|
auio.uio_procp = p;
|
#endif
|
#endif
|
#ifdef KTRACE
|
#ifdef KTRACE
|
/*
|
/*
|
* if tracing, save a copy of iovec
|
* if tracing, save a copy of iovec
|
*/
|
*/
|
if (KTRPOINT(p, KTR_GENIO))
|
if (KTRPOINT(p, KTR_GENIO))
|
ktriov = aiov;
|
ktriov = aiov;
|
#endif
|
#endif
|
cnt = SCARG(uap, nbyte);
|
cnt = SCARG(uap, nbyte);
|
#ifdef __ECOS
|
#ifdef __ECOS
|
error = (*fp->f_ops->fo_read)(fp, &auio);
|
error = (*fp->f_ops->fo_read)(fp, &auio);
|
#else
|
#else
|
error = (*fp->f_ops->fo_read)(fp, &auio, fp->f_cred);
|
error = (*fp->f_ops->fo_read)(fp, &auio, fp->f_cred);
|
#endif
|
#endif
|
if (error)
|
if (error)
|
#ifdef __ECOS
|
#ifdef __ECOS
|
if (auio.uio_resid != cnt && (
|
if (auio.uio_resid != cnt && (
|
#else
|
#else
|
if (auio.uio_resid != cnt && (error == ERESTART ||
|
if (auio.uio_resid != cnt && (error == ERESTART ||
|
#endif
|
#endif
|
error == EINTR || error == EWOULDBLOCK))
|
error == EINTR || error == EWOULDBLOCK))
|
error = 0;
|
error = 0;
|
cnt -= auio.uio_resid;
|
cnt -= auio.uio_resid;
|
#ifdef KTRACE
|
#ifdef KTRACE
|
if (KTRPOINT(p, KTR_GENIO) && error == 0)
|
if (KTRPOINT(p, KTR_GENIO) && error == 0)
|
ktrgenio(p->p_tracep, SCARG(uap, fd), UIO_READ, &ktriov,
|
ktrgenio(p->p_tracep, SCARG(uap, fd), UIO_READ, &ktriov,
|
cnt, error);
|
cnt, error);
|
#endif
|
#endif
|
*retval = cnt;
|
*retval = cnt;
|
return (error);
|
return (error);
|
}
|
}
|
|
|
|
|
#ifndef __ECOS
|
#ifndef __ECOS
|
/*
|
/*
|
* Scatter read system call.
|
* Scatter read system call.
|
*/
|
*/
|
int
|
int
|
sys_readv(p, v, retval)
|
sys_readv(p, v, retval)
|
struct proc *p;
|
struct proc *p;
|
void *v;
|
void *v;
|
register_t *retval;
|
register_t *retval;
|
{
|
{
|
register struct sys_readv_args /* {
|
register struct sys_readv_args /* {
|
syscallarg(int) fd;
|
syscallarg(int) fd;
|
syscallarg(struct iovec *) iovp;
|
syscallarg(struct iovec *) iovp;
|
syscallarg(int) iovcnt;
|
syscallarg(int) iovcnt;
|
} */ *uap = v;
|
} */ *uap = v;
|
register struct file *fp;
|
register struct file *fp;
|
register struct filedesc *fdp = p->p_fd;
|
register struct filedesc *fdp = p->p_fd;
|
struct uio auio;
|
struct uio auio;
|
register struct iovec *iov;
|
register struct iovec *iov;
|
struct iovec *needfree;
|
struct iovec *needfree;
|
struct iovec aiov[UIO_SMALLIOV];
|
struct iovec aiov[UIO_SMALLIOV];
|
long i, cnt, error = 0;
|
long i, cnt, error = 0;
|
u_int iovlen;
|
u_int iovlen;
|
#ifdef KTRACE
|
#ifdef KTRACE
|
struct iovec *ktriov = NULL;
|
struct iovec *ktriov = NULL;
|
#endif
|
#endif
|
|
|
if (((u_int)SCARG(uap, fd)) >= fdp->fd_nfiles ||
|
if (((u_int)SCARG(uap, fd)) >= fdp->fd_nfiles ||
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
|
(fp->f_flag & FREAD) == 0)
|
(fp->f_flag & FREAD) == 0)
|
return (EBADF);
|
return (EBADF);
|
if (SCARG(uap, iovcnt) <= 0)
|
if (SCARG(uap, iovcnt) <= 0)
|
return (EINVAL);
|
return (EINVAL);
|
/* note: can't use iovlen until iovcnt is validated */
|
/* note: can't use iovlen until iovcnt is validated */
|
iovlen = SCARG(uap, iovcnt) * sizeof (struct iovec);
|
iovlen = SCARG(uap, iovcnt) * sizeof (struct iovec);
|
if (SCARG(uap, iovcnt) > UIO_SMALLIOV) {
|
if (SCARG(uap, iovcnt) > UIO_SMALLIOV) {
|
if (SCARG(uap, iovcnt) > IOV_MAX)
|
if (SCARG(uap, iovcnt) > IOV_MAX)
|
return (EINVAL);
|
return (EINVAL);
|
MALLOC(iov, struct iovec *, iovlen, M_IOV, M_WAITOK);
|
MALLOC(iov, struct iovec *, iovlen, M_IOV, M_WAITOK);
|
needfree = iov;
|
needfree = iov;
|
} else {
|
} else {
|
iov = aiov;
|
iov = aiov;
|
needfree = NULL;
|
needfree = NULL;
|
}
|
}
|
auio.uio_iov = iov;
|
auio.uio_iov = iov;
|
auio.uio_iovcnt = SCARG(uap, iovcnt);
|
auio.uio_iovcnt = SCARG(uap, iovcnt);
|
auio.uio_rw = UIO_READ;
|
auio.uio_rw = UIO_READ;
|
auio.uio_segflg = UIO_USERSPACE;
|
auio.uio_segflg = UIO_USERSPACE;
|
auio.uio_procp = p;
|
auio.uio_procp = p;
|
error = copyin((caddr_t)SCARG(uap, iovp), (caddr_t)iov, iovlen);
|
error = copyin((caddr_t)SCARG(uap, iovp), (caddr_t)iov, iovlen);
|
if (error)
|
if (error)
|
goto done;
|
goto done;
|
auio.uio_resid = 0;
|
auio.uio_resid = 0;
|
for (i = 0; i < SCARG(uap, iovcnt); i++, iov++) {
|
for (i = 0; i < SCARG(uap, iovcnt); i++, iov++) {
|
/* Don't allow sum > SSIZE_MAX */
|
/* Don't allow sum > SSIZE_MAX */
|
if (iov->iov_len > SSIZE_MAX ||
|
if (iov->iov_len > SSIZE_MAX ||
|
(auio.uio_resid += iov->iov_len) > SSIZE_MAX) {
|
(auio.uio_resid += iov->iov_len) > SSIZE_MAX) {
|
error = EINVAL;
|
error = EINVAL;
|
goto done;
|
goto done;
|
}
|
}
|
}
|
}
|
#ifdef KTRACE
|
#ifdef KTRACE
|
/*
|
/*
|
* if tracing, save a copy of iovec
|
* if tracing, save a copy of iovec
|
*/
|
*/
|
if (KTRPOINT(p, KTR_GENIO)) {
|
if (KTRPOINT(p, KTR_GENIO)) {
|
MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
|
MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
|
bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
|
bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
|
}
|
}
|
#endif
|
#endif
|
cnt = auio.uio_resid;
|
cnt = auio.uio_resid;
|
error = (*fp->f_ops->fo_read)(fp, &auio, fp->f_cred);
|
error = (*fp->f_ops->fo_read)(fp, &auio, fp->f_cred);
|
if (error)
|
if (error)
|
if (auio.uio_resid != cnt && (error == ERESTART ||
|
if (auio.uio_resid != cnt && (error == ERESTART ||
|
error == EINTR || error == EWOULDBLOCK))
|
error == EINTR || error == EWOULDBLOCK))
|
error = 0;
|
error = 0;
|
cnt -= auio.uio_resid;
|
cnt -= auio.uio_resid;
|
#ifdef KTRACE
|
#ifdef KTRACE
|
if (ktriov != NULL) {
|
if (ktriov != NULL) {
|
if (error == 0)
|
if (error == 0)
|
ktrgenio(p->p_tracep, SCARG(uap, fd), UIO_READ, ktriov,
|
ktrgenio(p->p_tracep, SCARG(uap, fd), UIO_READ, ktriov,
|
cnt, error);
|
cnt, error);
|
FREE(ktriov, M_TEMP);
|
FREE(ktriov, M_TEMP);
|
}
|
}
|
#endif
|
#endif
|
*retval = cnt;
|
*retval = cnt;
|
done:
|
done:
|
if (needfree)
|
if (needfree)
|
FREE(needfree, M_IOV);
|
FREE(needfree, M_IOV);
|
return (error);
|
return (error);
|
}
|
}
|
#endif
|
#endif
|
|
|
/*
|
/*
|
* Write system call
|
* Write system call
|
*/
|
*/
|
#ifdef __ECOS
|
#ifdef __ECOS
|
int
|
int
|
sys_write(struct sys_write_args *uap, register_t *retval)
|
sys_write(struct sys_write_args *uap, register_t *retval)
|
#else
|
#else
|
int
|
int
|
sys_write(p, v, retval)
|
sys_write(p, v, retval)
|
struct proc *p;
|
struct proc *p;
|
void *v;
|
void *v;
|
register_t *retval;
|
register_t *retval;
|
#endif
|
#endif
|
{
|
{
|
#ifndef __ECOS
|
#ifndef __ECOS
|
register struct sys_write_args /* {
|
register struct sys_write_args /* {
|
syscallarg(int) fd;
|
syscallarg(int) fd;
|
syscallarg(void *) buf;
|
syscallarg(void *) buf;
|
syscallarg(size_t) nbyte;
|
syscallarg(size_t) nbyte;
|
} */ *uap = v;
|
} */ *uap = v;
|
register struct filedesc *fdp = p->p_fd;
|
register struct filedesc *fdp = p->p_fd;
|
#endif
|
#endif
|
struct file *fp;
|
struct file *fp;
|
struct uio auio;
|
struct uio auio;
|
struct iovec aiov;
|
struct iovec aiov;
|
long cnt, error = 0;
|
long cnt, error = 0;
|
#ifdef KTRACE
|
#ifdef KTRACE
|
struct iovec ktriov;
|
struct iovec ktriov;
|
#endif
|
#endif
|
|
|
#ifdef __ECOS
|
#ifdef __ECOS
|
if (getfp((u_int)SCARG(uap, fd), &fp) ||
|
if (getfp((u_int)SCARG(uap, fd), &fp) ||
|
#else
|
#else
|
if (((u_int)SCARG(uap, fd)) >= fdp->fd_nfiles ||
|
if (((u_int)SCARG(uap, fd)) >= fdp->fd_nfiles ||
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
|
#endif
|
#endif
|
(fp->f_flag & FWRITE) == 0)
|
(fp->f_flag & FWRITE) == 0)
|
return (EBADF);
|
return (EBADF);
|
/* Don't allow nbyte to be larger than max return val */
|
/* Don't allow nbyte to be larger than max return val */
|
if (SCARG(uap, nbyte) > SSIZE_MAX)
|
if (SCARG(uap, nbyte) > SSIZE_MAX)
|
return(EINVAL);
|
return(EINVAL);
|
aiov.iov_base = (caddr_t)SCARG(uap, buf);
|
aiov.iov_base = (caddr_t)SCARG(uap, buf);
|
aiov.iov_len = SCARG(uap, nbyte);
|
aiov.iov_len = SCARG(uap, nbyte);
|
auio.uio_iov = &aiov;
|
auio.uio_iov = &aiov;
|
auio.uio_iovcnt = 1;
|
auio.uio_iovcnt = 1;
|
auio.uio_resid = SCARG(uap, nbyte);
|
auio.uio_resid = SCARG(uap, nbyte);
|
auio.uio_rw = UIO_WRITE;
|
auio.uio_rw = UIO_WRITE;
|
auio.uio_segflg = UIO_USERSPACE;
|
auio.uio_segflg = UIO_USERSPACE;
|
#ifndef __ECOS
|
#ifndef __ECOS
|
auio.uio_procp = p;
|
auio.uio_procp = p;
|
#endif
|
#endif
|
#ifdef KTRACE
|
#ifdef KTRACE
|
/*
|
/*
|
* if tracing, save a copy of iovec
|
* if tracing, save a copy of iovec
|
*/
|
*/
|
if (KTRPOINT(p, KTR_GENIO))
|
if (KTRPOINT(p, KTR_GENIO))
|
ktriov = aiov;
|
ktriov = aiov;
|
#endif
|
#endif
|
cnt = SCARG(uap, nbyte);
|
cnt = SCARG(uap, nbyte);
|
#ifdef __ECOS
|
#ifdef __ECOS
|
error = (*fp->f_ops->fo_write)(fp, &auio);
|
error = (*fp->f_ops->fo_write)(fp, &auio);
|
#else
|
#else
|
error = (*fp->f_ops->fo_write)(fp, &auio, fp->f_cred);
|
error = (*fp->f_ops->fo_write)(fp, &auio, fp->f_cred);
|
#endif
|
#endif
|
if (error) {
|
if (error) {
|
#ifdef __ECOS
|
#ifdef __ECOS
|
if (auio.uio_resid != cnt &&
|
if (auio.uio_resid != cnt &&
|
(error == EINTR || error == EWOULDBLOCK))
|
(error == EINTR || error == EWOULDBLOCK))
|
error = 0;
|
error = 0;
|
#else
|
#else
|
if (auio.uio_resid != cnt && (error == ERESTART ||
|
if (auio.uio_resid != cnt && (error == ERESTART ||
|
error == EINTR || error == EWOULDBLOCK))
|
error == EINTR || error == EWOULDBLOCK))
|
error = 0;
|
error = 0;
|
if (error == EPIPE)
|
if (error == EPIPE)
|
psignal(p, SIGPIPE);
|
psignal(p, SIGPIPE);
|
#endif
|
#endif
|
}
|
}
|
cnt -= auio.uio_resid;
|
cnt -= auio.uio_resid;
|
#ifdef KTRACE
|
#ifdef KTRACE
|
if (KTRPOINT(p, KTR_GENIO) && error == 0)
|
if (KTRPOINT(p, KTR_GENIO) && error == 0)
|
ktrgenio(p->p_tracep, SCARG(uap, fd), UIO_WRITE,
|
ktrgenio(p->p_tracep, SCARG(uap, fd), UIO_WRITE,
|
&ktriov, cnt, error);
|
&ktriov, cnt, error);
|
#endif
|
#endif
|
*retval = cnt;
|
*retval = cnt;
|
return (error);
|
return (error);
|
}
|
}
|
|
|
#ifndef __ECOS
|
#ifndef __ECOS
|
/*
|
/*
|
* Gather write system call
|
* Gather write system call
|
*/
|
*/
|
int
|
int
|
sys_writev(p, v, retval)
|
sys_writev(p, v, retval)
|
struct proc *p;
|
struct proc *p;
|
void *v;
|
void *v;
|
register_t *retval;
|
register_t *retval;
|
{
|
{
|
register struct sys_writev_args /* {
|
register struct sys_writev_args /* {
|
syscallarg(int) fd;
|
syscallarg(int) fd;
|
syscallarg(struct iovec *) iovp;
|
syscallarg(struct iovec *) iovp;
|
syscallarg(int) iovcnt;
|
syscallarg(int) iovcnt;
|
} */ *uap = v;
|
} */ *uap = v;
|
register struct file *fp;
|
register struct file *fp;
|
register struct filedesc *fdp = p->p_fd;
|
register struct filedesc *fdp = p->p_fd;
|
struct uio auio;
|
struct uio auio;
|
register struct iovec *iov;
|
register struct iovec *iov;
|
struct iovec *needfree;
|
struct iovec *needfree;
|
struct iovec aiov[UIO_SMALLIOV];
|
struct iovec aiov[UIO_SMALLIOV];
|
long i, cnt, error = 0;
|
long i, cnt, error = 0;
|
u_int iovlen;
|
u_int iovlen;
|
#ifdef KTRACE
|
#ifdef KTRACE
|
struct iovec *ktriov = NULL;
|
struct iovec *ktriov = NULL;
|
#endif
|
#endif
|
|
|
if (((u_int)SCARG(uap, fd)) >= fdp->fd_nfiles ||
|
if (((u_int)SCARG(uap, fd)) >= fdp->fd_nfiles ||
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL ||
|
(fp->f_flag & FWRITE) == 0)
|
(fp->f_flag & FWRITE) == 0)
|
return (EBADF);
|
return (EBADF);
|
if (SCARG(uap, iovcnt) <= 0)
|
if (SCARG(uap, iovcnt) <= 0)
|
return (EINVAL);
|
return (EINVAL);
|
/* note: can't use iovlen until iovcnt is validated */
|
/* note: can't use iovlen until iovcnt is validated */
|
iovlen = SCARG(uap, iovcnt) * sizeof (struct iovec);
|
iovlen = SCARG(uap, iovcnt) * sizeof (struct iovec);
|
if (SCARG(uap, iovcnt) > UIO_SMALLIOV) {
|
if (SCARG(uap, iovcnt) > UIO_SMALLIOV) {
|
if (SCARG(uap, iovcnt) > IOV_MAX)
|
if (SCARG(uap, iovcnt) > IOV_MAX)
|
return (EINVAL);
|
return (EINVAL);
|
MALLOC(iov, struct iovec *, iovlen, M_IOV, M_WAITOK);
|
MALLOC(iov, struct iovec *, iovlen, M_IOV, M_WAITOK);
|
needfree = iov;
|
needfree = iov;
|
} else {
|
} else {
|
iov = aiov;
|
iov = aiov;
|
needfree = NULL;
|
needfree = NULL;
|
}
|
}
|
auio.uio_iov = iov;
|
auio.uio_iov = iov;
|
auio.uio_iovcnt = SCARG(uap, iovcnt);
|
auio.uio_iovcnt = SCARG(uap, iovcnt);
|
auio.uio_rw = UIO_WRITE;
|
auio.uio_rw = UIO_WRITE;
|
auio.uio_segflg = UIO_USERSPACE;
|
auio.uio_segflg = UIO_USERSPACE;
|
auio.uio_procp = p;
|
auio.uio_procp = p;
|
error = copyin((caddr_t)SCARG(uap, iovp), (caddr_t)iov, iovlen);
|
error = copyin((caddr_t)SCARG(uap, iovp), (caddr_t)iov, iovlen);
|
if (error)
|
if (error)
|
goto done;
|
goto done;
|
auio.uio_resid = 0;
|
auio.uio_resid = 0;
|
for (i = 0; i < SCARG(uap, iovcnt); i++, iov++) {
|
for (i = 0; i < SCARG(uap, iovcnt); i++, iov++) {
|
/* Don't allow sum > SSIZE_MAX */
|
/* Don't allow sum > SSIZE_MAX */
|
if (iov->iov_len > SSIZE_MAX ||
|
if (iov->iov_len > SSIZE_MAX ||
|
(auio.uio_resid += iov->iov_len) > SSIZE_MAX) {
|
(auio.uio_resid += iov->iov_len) > SSIZE_MAX) {
|
error = EINVAL;
|
error = EINVAL;
|
goto done;
|
goto done;
|
}
|
}
|
}
|
}
|
#ifdef KTRACE
|
#ifdef KTRACE
|
/*
|
/*
|
* if tracing, save a copy of iovec
|
* if tracing, save a copy of iovec
|
*/
|
*/
|
if (KTRPOINT(p, KTR_GENIO)) {
|
if (KTRPOINT(p, KTR_GENIO)) {
|
MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
|
MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
|
bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
|
bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
|
}
|
}
|
#endif
|
#endif
|
cnt = auio.uio_resid;
|
cnt = auio.uio_resid;
|
error = (*fp->f_ops->fo_write)(fp, &auio, fp->f_cred);
|
error = (*fp->f_ops->fo_write)(fp, &auio, fp->f_cred);
|
if (error) {
|
if (error) {
|
if (auio.uio_resid != cnt && (error == ERESTART ||
|
if (auio.uio_resid != cnt && (error == ERESTART ||
|
error == EINTR || error == EWOULDBLOCK))
|
error == EINTR || error == EWOULDBLOCK))
|
error = 0;
|
error = 0;
|
if (error == EPIPE)
|
if (error == EPIPE)
|
psignal(p, SIGPIPE);
|
psignal(p, SIGPIPE);
|
}
|
}
|
cnt -= auio.uio_resid;
|
cnt -= auio.uio_resid;
|
#ifdef KTRACE
|
#ifdef KTRACE
|
if (ktriov != NULL) {
|
if (ktriov != NULL) {
|
if (error == 0)
|
if (error == 0)
|
ktrgenio(p->p_tracep, SCARG(uap, fd), UIO_WRITE,
|
ktrgenio(p->p_tracep, SCARG(uap, fd), UIO_WRITE,
|
ktriov, cnt, error);
|
ktriov, cnt, error);
|
FREE(ktriov, M_TEMP);
|
FREE(ktriov, M_TEMP);
|
}
|
}
|
#endif
|
#endif
|
*retval = cnt;
|
*retval = cnt;
|
done:
|
done:
|
if (needfree)
|
if (needfree)
|
FREE(needfree, M_IOV);
|
FREE(needfree, M_IOV);
|
return (error);
|
return (error);
|
}
|
}
|
#endif
|
#endif
|
|
|
/*
|
/*
|
* Ioctl system call
|
* Ioctl system call
|
*/
|
*/
|
#ifdef __ECOS
|
#ifdef __ECOS
|
int
|
int
|
sys_ioctl(struct sys_ioctl_args *uap, register_t *retval)
|
sys_ioctl(struct sys_ioctl_args *uap, register_t *retval)
|
#else
|
#else
|
/* ARGSUSED */
|
/* ARGSUSED */
|
int
|
int
|
sys_ioctl(p, v, retval)
|
sys_ioctl(p, v, retval)
|
struct proc *p;
|
struct proc *p;
|
void *v;
|
void *v;
|
register_t *retval;
|
register_t *retval;
|
#endif
|
#endif
|
{
|
{
|
#ifndef __ECOS
|
#ifndef __ECOS
|
register struct sys_ioctl_args /* {
|
register struct sys_ioctl_args /* {
|
syscallarg(int) fd;
|
syscallarg(int) fd;
|
syscallarg(u_long) com;
|
syscallarg(u_long) com;
|
syscallarg(caddr_t) data;
|
syscallarg(caddr_t) data;
|
} */ *uap = v;
|
} */ *uap = v;
|
register struct filedesc *fdp;
|
register struct filedesc *fdp;
|
#endif
|
#endif
|
int tmp;
|
int tmp;
|
struct file *fp;
|
struct file *fp;
|
register u_long com;
|
register u_long com;
|
register int error;
|
register int error;
|
register u_int size;
|
register u_int size;
|
caddr_t data, memp;
|
caddr_t data, memp;
|
#define STK_PARAMS 128
|
#define STK_PARAMS 128
|
char stkbuf[STK_PARAMS];
|
char stkbuf[STK_PARAMS];
|
|
|
#ifdef __ECOS
|
#ifdef __ECOS
|
if (getfp(SCARG(uap, fd), &fp))
|
if (getfp(SCARG(uap, fd), &fp))
|
#else
|
#else
|
fdp = p->p_fd;
|
fdp = p->p_fd;
|
if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles ||
|
if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles ||
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL)
|
(fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL)
|
#endif
|
#endif
|
return (EBADF);
|
return (EBADF);
|
|
|
if ((fp->f_flag & (FREAD | FWRITE)) == 0)
|
if ((fp->f_flag & (FREAD | FWRITE)) == 0)
|
return (EBADF);
|
return (EBADF);
|
|
|
#ifdef __ECOS
|
#ifdef __ECOS
|
com = SCARG(uap, com);
|
com = SCARG(uap, com);
|
#else
|
#else
|
switch (com = SCARG(uap, com)) {
|
switch (com = SCARG(uap, com)) {
|
case FIONCLEX:
|
case FIONCLEX:
|
fdp->fd_ofileflags[SCARG(uap, fd)] &= ~UF_EXCLOSE;
|
fdp->fd_ofileflags[SCARG(uap, fd)] &= ~UF_EXCLOSE;
|
return (0);
|
return (0);
|
case FIOCLEX:
|
case FIOCLEX:
|
fdp->fd_ofileflags[SCARG(uap, fd)] |= UF_EXCLOSE;
|
fdp->fd_ofileflags[SCARG(uap, fd)] |= UF_EXCLOSE;
|
return (0);
|
return (0);
|
}
|
}
|
#endif
|
#endif
|
|
|
/*
|
/*
|
* Interpret high order word to find amount of data to be
|
* Interpret high order word to find amount of data to be
|
* copied to/from the user's address space.
|
* copied to/from the user's address space.
|
*/
|
*/
|
size = IOCPARM_LEN(com);
|
size = IOCPARM_LEN(com);
|
#ifndef __ECOS
|
#ifndef __ECOS
|
if (size > IOCPARM_MAX)
|
if (size > IOCPARM_MAX)
|
return (ENOTTY);
|
return (ENOTTY);
|
#endif
|
#endif
|
memp = NULL;
|
memp = NULL;
|
if (size > sizeof (stkbuf)) {
|
if (size > sizeof (stkbuf)) {
|
memp = (caddr_t)malloc((u_long)size, M_IOCTLOPS, M_WAITOK);
|
memp = (caddr_t)malloc((u_long)size, M_IOCTLOPS, M_WAITOK);
|
data = memp;
|
data = memp;
|
} else
|
} else
|
data = stkbuf;
|
data = stkbuf;
|
if (com&IOC_IN) {
|
if (com&IOC_IN) {
|
if (size) {
|
if (size) {
|
error = copyin(SCARG(uap, data), data, (u_int)size);
|
error = copyin(SCARG(uap, data), data, (u_int)size);
|
if (error) {
|
if (error) {
|
if (memp)
|
if (memp)
|
free(memp, M_IOCTLOPS);
|
free(memp, M_IOCTLOPS);
|
return (error);
|
return (error);
|
}
|
}
|
} else
|
} else
|
*(caddr_t *)data = SCARG(uap, data);
|
*(caddr_t *)data = SCARG(uap, data);
|
} else if ((com&IOC_OUT) && size)
|
} else if ((com&IOC_OUT) && size)
|
/*
|
/*
|
* Zero the buffer so the user always
|
* Zero the buffer so the user always
|
* gets back something deterministic.
|
* gets back something deterministic.
|
*/
|
*/
|
bzero(data, size);
|
bzero(data, size);
|
else if (com&IOC_VOID)
|
else if (com&IOC_VOID)
|
*(caddr_t *)data = SCARG(uap, data);
|
*(caddr_t *)data = SCARG(uap, data);
|
|
|
switch (com) {
|
switch (com) {
|
|
|
case FIONBIO:
|
case FIONBIO:
|
if ((tmp = *(int *)data) != 0)
|
if ((tmp = *(int *)data) != 0)
|
fp->f_flag |= FNONBLOCK;
|
fp->f_flag |= FNONBLOCK;
|
else
|
else
|
fp->f_flag &= ~FNONBLOCK;
|
fp->f_flag &= ~FNONBLOCK;
|
#ifdef __ECOS
|
#ifdef __ECOS
|
error = (*fp->f_ops->fo_ioctl)(fp, FIONBIO, (CYG_ADDRWORD)&tmp);
|
error = (*fp->f_ops->fo_ioctl)(fp, FIONBIO, (CYG_ADDRWORD)&tmp);
|
#else
|
#else
|
error = (*fp->f_ops->fo_ioctl)(fp, FIONBIO, (caddr_t)&tmp, p);
|
error = (*fp->f_ops->fo_ioctl)(fp, FIONBIO, (caddr_t)&tmp, p);
|
#endif
|
#endif
|
break;
|
break;
|
|
|
case FIOASYNC:
|
case FIOASYNC:
|
if ((tmp = *(int *)data) != 0)
|
if ((tmp = *(int *)data) != 0)
|
fp->f_flag |= FASYNC;
|
fp->f_flag |= FASYNC;
|
else
|
else
|
fp->f_flag &= ~FASYNC;
|
fp->f_flag &= ~FASYNC;
|
#ifdef __ECOS
|
#ifdef __ECOS
|
error = (*fp->f_ops->fo_ioctl)(fp, FIOASYNC, (CYG_ADDRWORD)&tmp);
|
error = (*fp->f_ops->fo_ioctl)(fp, FIOASYNC, (CYG_ADDRWORD)&tmp);
|
#else
|
#else
|
error = (*fp->f_ops->fo_ioctl)(fp, FIOASYNC, (caddr_t)&tmp, p);
|
error = (*fp->f_ops->fo_ioctl)(fp, FIOASYNC, (caddr_t)&tmp, p);
|
#endif
|
#endif
|
break;
|
break;
|
|
|
#ifndef __ECOS
|
#ifndef __ECOS
|
case FIOSETOWN:
|
case FIOSETOWN:
|
tmp = *(int *)data;
|
tmp = *(int *)data;
|
if (fp->f_type == DTYPE_SOCKET) {
|
if (fp->f_type == DTYPE_SOCKET) {
|
struct socket *so = (struct socket *)fp->f_data;
|
struct socket *so = (struct socket *)fp->f_data;
|
|
|
so->so_pgid = tmp;
|
so->so_pgid = tmp;
|
so->so_siguid = p->p_cred->p_ruid;
|
so->so_siguid = p->p_cred->p_ruid;
|
so->so_sigeuid = p->p_ucred->cr_uid;
|
so->so_sigeuid = p->p_ucred->cr_uid;
|
error = 0;
|
error = 0;
|
break;
|
break;
|
}
|
}
|
if (tmp <= 0) {
|
if (tmp <= 0) {
|
tmp = -tmp;
|
tmp = -tmp;
|
} else {
|
} else {
|
struct proc *p1 = pfind(tmp);
|
struct proc *p1 = pfind(tmp);
|
if (p1 == 0) {
|
if (p1 == 0) {
|
error = ESRCH;
|
error = ESRCH;
|
break;
|
break;
|
}
|
}
|
tmp = p1->p_pgrp->pg_id;
|
tmp = p1->p_pgrp->pg_id;
|
}
|
}
|
error = (*fp->f_ops->fo_ioctl)
|
error = (*fp->f_ops->fo_ioctl)
|
(fp, TIOCSPGRP, (caddr_t)&tmp, p);
|
(fp, TIOCSPGRP, (caddr_t)&tmp, p);
|
break;
|
break;
|
|
|
case FIOGETOWN:
|
case FIOGETOWN:
|
if (fp->f_type == DTYPE_SOCKET) {
|
if (fp->f_type == DTYPE_SOCKET) {
|
error = 0;
|
error = 0;
|
*(int *)data = ((struct socket *)fp->f_data)->so_pgid;
|
*(int *)data = ((struct socket *)fp->f_data)->so_pgid;
|
break;
|
break;
|
}
|
}
|
error = (*fp->f_ops->fo_ioctl)(fp, TIOCGPGRP, data, p);
|
error = (*fp->f_ops->fo_ioctl)(fp, TIOCGPGRP, data, p);
|
*(int *)data = -*(int *)data;
|
*(int *)data = -*(int *)data;
|
break;
|
break;
|
#endif
|
#endif
|
default:
|
default:
|
#ifdef __ECOS
|
#ifdef __ECOS
|
error = (*fp->f_ops->fo_ioctl)(fp, com, (CYG_ADDRWORD)data);
|
error = (*fp->f_ops->fo_ioctl)(fp, com, (CYG_ADDRWORD)data);
|
#else
|
#else
|
error = (*fp->f_ops->fo_ioctl)(fp, com, data, p);
|
error = (*fp->f_ops->fo_ioctl)(fp, com, data, p);
|
#endif
|
#endif
|
/*
|
/*
|
* Copy any data to user, size was
|
* Copy any data to user, size was
|
* already set and checked above.
|
* already set and checked above.
|
*/
|
*/
|
if (error == 0 && (com&IOC_OUT) && size)
|
if (error == 0 && (com&IOC_OUT) && size)
|
error = copyout(data, SCARG(uap, data), (u_int)size);
|
error = copyout(data, SCARG(uap, data), (u_int)size);
|
break;
|
break;
|
}
|
}
|
if (memp)
|
if (memp)
|
free(memp, M_IOCTLOPS);
|
free(memp, M_IOCTLOPS);
|
return (error);
|
return (error);
|
}
|
}
|
|
|
#ifndef __ECOS
|
#ifndef __ECOS
|
int selwait, nselcoll;
|
int selwait, nselcoll;
|
|
|
/*
|
/*
|
* Select system call.
|
* Select system call.
|
*/
|
*/
|
int
|
int
|
sys_select(p, v, retval)
|
sys_select(p, v, retval)
|
register struct proc *p;
|
register struct proc *p;
|
void *v;
|
void *v;
|
register_t *retval;
|
register_t *retval;
|
{
|
{
|
register struct sys_select_args /* {
|
register struct sys_select_args /* {
|
syscallarg(int) nd;
|
syscallarg(int) nd;
|
syscallarg(fd_set *) in;
|
syscallarg(fd_set *) in;
|
syscallarg(fd_set *) ou;
|
syscallarg(fd_set *) ou;
|
syscallarg(fd_set *) ex;
|
syscallarg(fd_set *) ex;
|
syscallarg(struct timeval *) tv;
|
syscallarg(struct timeval *) tv;
|
} */ *uap = v;
|
} */ *uap = v;
|
fd_set bits[6], *pibits[3], *pobits[3];
|
fd_set bits[6], *pibits[3], *pobits[3];
|
struct timeval atv;
|
struct timeval atv;
|
int s, ncoll, error = 0, timo;
|
int s, ncoll, error = 0, timo;
|
u_int ni;
|
u_int ni;
|
|
|
if (SCARG(uap, nd) > p->p_fd->fd_nfiles) {
|
if (SCARG(uap, nd) > p->p_fd->fd_nfiles) {
|
/* forgiving; slightly wrong */
|
/* forgiving; slightly wrong */
|
SCARG(uap, nd) = p->p_fd->fd_nfiles;
|
SCARG(uap, nd) = p->p_fd->fd_nfiles;
|
}
|
}
|
ni = howmany(SCARG(uap, nd), NFDBITS) * sizeof(fd_mask);
|
ni = howmany(SCARG(uap, nd), NFDBITS) * sizeof(fd_mask);
|
if (SCARG(uap, nd) > FD_SETSIZE) {
|
if (SCARG(uap, nd) > FD_SETSIZE) {
|
caddr_t mbits;
|
caddr_t mbits;
|
|
|
if ((mbits = malloc(ni * 6, M_TEMP, M_WAITOK)) == NULL) {
|
if ((mbits = malloc(ni * 6, M_TEMP, M_WAITOK)) == NULL) {
|
error = EINVAL;
|
error = EINVAL;
|
goto cleanup;
|
goto cleanup;
|
}
|
}
|
bzero(mbits, ni * 6);
|
bzero(mbits, ni * 6);
|
pibits[0] = (fd_set *)&mbits[ni * 0];
|
pibits[0] = (fd_set *)&mbits[ni * 0];
|
pibits[1] = (fd_set *)&mbits[ni * 1];
|
pibits[1] = (fd_set *)&mbits[ni * 1];
|
pibits[2] = (fd_set *)&mbits[ni * 2];
|
pibits[2] = (fd_set *)&mbits[ni * 2];
|
pobits[0] = (fd_set *)&mbits[ni * 3];
|
pobits[0] = (fd_set *)&mbits[ni * 3];
|
pobits[1] = (fd_set *)&mbits[ni * 4];
|
pobits[1] = (fd_set *)&mbits[ni * 4];
|
pobits[2] = (fd_set *)&mbits[ni * 5];
|
pobits[2] = (fd_set *)&mbits[ni * 5];
|
} else {
|
} else {
|
bzero((caddr_t)bits, sizeof(bits));
|
bzero((caddr_t)bits, sizeof(bits));
|
pibits[0] = &bits[0];
|
pibits[0] = &bits[0];
|
pibits[1] = &bits[1];
|
pibits[1] = &bits[1];
|
pibits[2] = &bits[2];
|
pibits[2] = &bits[2];
|
pobits[0] = &bits[3];
|
pobits[0] = &bits[3];
|
pobits[1] = &bits[4];
|
pobits[1] = &bits[4];
|
pobits[2] = &bits[5];
|
pobits[2] = &bits[5];
|
}
|
}
|
|
|
#define getbits(name, x) \
|
#define getbits(name, x) \
|
if (SCARG(uap, name) && (error = copyin((caddr_t)SCARG(uap, name), \
|
if (SCARG(uap, name) && (error = copyin((caddr_t)SCARG(uap, name), \
|
(caddr_t)pibits[x], ni))) \
|
(caddr_t)pibits[x], ni))) \
|
goto done;
|
goto done;
|
getbits(in, 0);
|
getbits(in, 0);
|
getbits(ou, 1);
|
getbits(ou, 1);
|
getbits(ex, 2);
|
getbits(ex, 2);
|
#undef getbits
|
#undef getbits
|
|
|
if (SCARG(uap, tv)) {
|
if (SCARG(uap, tv)) {
|
error = copyin((caddr_t)SCARG(uap, tv), (caddr_t)&atv,
|
error = copyin((caddr_t)SCARG(uap, tv), (caddr_t)&atv,
|
sizeof (atv));
|
sizeof (atv));
|
if (error)
|
if (error)
|
goto done;
|
goto done;
|
if (itimerfix(&atv)) {
|
if (itimerfix(&atv)) {
|
error = EINVAL;
|
error = EINVAL;
|
goto done;
|
goto done;
|
}
|
}
|
s = splclock();
|
s = splclock();
|
timeradd(&atv, &time, &atv);
|
timeradd(&atv, &time, &atv);
|
timo = hzto(&atv);
|
timo = hzto(&atv);
|
/*
|
/*
|
* Avoid inadvertently sleeping forever.
|
* Avoid inadvertently sleeping forever.
|
*/
|
*/
|
if (timo == 0)
|
if (timo == 0)
|
timo = 1;
|
timo = 1;
|
splx(s);
|
splx(s);
|
} else
|
} else
|
timo = 0;
|
timo = 0;
|
retry:
|
retry:
|
ncoll = nselcoll;
|
ncoll = nselcoll;
|
p->p_flag |= P_SELECT;
|
p->p_flag |= P_SELECT;
|
error = selscan(p, pibits[0], pobits[0], SCARG(uap, nd), retval);
|
error = selscan(p, pibits[0], pobits[0], SCARG(uap, nd), retval);
|
if (error || *retval)
|
if (error || *retval)
|
goto done;
|
goto done;
|
s = splhigh();
|
s = splhigh();
|
/* this should be timercmp(&time, &atv, >=) */
|
/* this should be timercmp(&time, &atv, >=) */
|
if (SCARG(uap, tv) && (time.tv_sec > atv.tv_sec ||
|
if (SCARG(uap, tv) && (time.tv_sec > atv.tv_sec ||
|
(time.tv_sec == atv.tv_sec && time.tv_usec >= atv.tv_usec))) {
|
(time.tv_sec == atv.tv_sec && time.tv_usec >= atv.tv_usec))) {
|
splx(s);
|
splx(s);
|
goto done;
|
goto done;
|
}
|
}
|
if ((p->p_flag & P_SELECT) == 0 || nselcoll != ncoll) {
|
if ((p->p_flag & P_SELECT) == 0 || nselcoll != ncoll) {
|
splx(s);
|
splx(s);
|
goto retry;
|
goto retry;
|
}
|
}
|
p->p_flag &= ~P_SELECT;
|
p->p_flag &= ~P_SELECT;
|
error = tsleep((caddr_t)&selwait, PSOCK | PCATCH, "select", timo);
|
error = tsleep((caddr_t)&selwait, PSOCK | PCATCH, "select", timo);
|
splx(s);
|
splx(s);
|
if (error == 0)
|
if (error == 0)
|
goto retry;
|
goto retry;
|
done:
|
done:
|
p->p_flag &= ~P_SELECT;
|
p->p_flag &= ~P_SELECT;
|
/* select is not restarted after signals... */
|
/* select is not restarted after signals... */
|
if (error == ERESTART)
|
if (error == ERESTART)
|
error = EINTR;
|
error = EINTR;
|
if (error == EWOULDBLOCK)
|
if (error == EWOULDBLOCK)
|
error = 0;
|
error = 0;
|
#define putbits(name, x) \
|
#define putbits(name, x) \
|
if (SCARG(uap, name) && (error2 = copyout((caddr_t)pobits[x], \
|
if (SCARG(uap, name) && (error2 = copyout((caddr_t)pobits[x], \
|
(caddr_t)SCARG(uap, name), ni))) \
|
(caddr_t)SCARG(uap, name), ni))) \
|
error = error2;
|
error = error2;
|
if (error == 0) {
|
if (error == 0) {
|
int error2;
|
int error2;
|
|
|
putbits(in, 0);
|
putbits(in, 0);
|
putbits(ou, 1);
|
putbits(ou, 1);
|
putbits(ex, 2);
|
putbits(ex, 2);
|
#undef putbits
|
#undef putbits
|
}
|
}
|
|
|
cleanup:
|
cleanup:
|
if (pibits[0] != &bits[0])
|
if (pibits[0] != &bits[0])
|
free(pibits[0], M_TEMP);
|
free(pibits[0], M_TEMP);
|
return (error);
|
return (error);
|
}
|
}
|
|
|
int
|
int
|
selscan(p, ibits, obits, nfd, retval)
|
selscan(p, ibits, obits, nfd, retval)
|
struct proc *p;
|
struct proc *p;
|
fd_set *ibits, *obits;
|
fd_set *ibits, *obits;
|
int nfd;
|
int nfd;
|
register_t *retval;
|
register_t *retval;
|
{
|
{
|
caddr_t cibits = (caddr_t)ibits, cobits = (caddr_t)obits;
|
caddr_t cibits = (caddr_t)ibits, cobits = (caddr_t)obits;
|
register struct filedesc *fdp = p->p_fd;
|
register struct filedesc *fdp = p->p_fd;
|
register int msk, i, j, fd;
|
register int msk, i, j, fd;
|
register fd_mask bits;
|
register fd_mask bits;
|
struct file *fp;
|
struct file *fp;
|
int ni, n = 0;
|
int ni, n = 0;
|
static int flag[3] = { FREAD, FWRITE, 0 };
|
static int flag[3] = { FREAD, FWRITE, 0 };
|
|
|
/*
|
/*
|
* if nfd > FD_SETSIZE then the fd_set's contain nfd bits (rounded
|
* if nfd > FD_SETSIZE then the fd_set's contain nfd bits (rounded
|
* up to the next byte) otherwise the fd_set's are normal sized.
|
* up to the next byte) otherwise the fd_set's are normal sized.
|
*/
|
*/
|
ni = sizeof(fd_set);
|
ni = sizeof(fd_set);
|
if (nfd > FD_SETSIZE)
|
if (nfd > FD_SETSIZE)
|
ni = howmany(nfd, NFDBITS) * sizeof(fd_mask);
|
ni = howmany(nfd, NFDBITS) * sizeof(fd_mask);
|
|
|
for (msk = 0; msk < 3; msk++) {
|
for (msk = 0; msk < 3; msk++) {
|
fd_set *pibits = (fd_set *)&cibits[msk*ni];
|
fd_set *pibits = (fd_set *)&cibits[msk*ni];
|
fd_set *pobits = (fd_set *)&cobits[msk*ni];
|
fd_set *pobits = (fd_set *)&cobits[msk*ni];
|
|
|
for (i = 0; i < nfd; i += NFDBITS) {
|
for (i = 0; i < nfd; i += NFDBITS) {
|
bits = pibits->fds_bits[i/NFDBITS];
|
bits = pibits->fds_bits[i/NFDBITS];
|
while ((j = ffs(bits)) && (fd = i + --j) < nfd) {
|
while ((j = ffs(bits)) && (fd = i + --j) < nfd) {
|
bits &= ~(1 << j);
|
bits &= ~(1 << j);
|
fp = fdp->fd_ofiles[fd];
|
fp = fdp->fd_ofiles[fd];
|
if (fp == NULL)
|
if (fp == NULL)
|
return (EBADF);
|
return (EBADF);
|
if ((*fp->f_ops->fo_select)(fp, flag[msk], p)) {
|
if ((*fp->f_ops->fo_select)(fp, flag[msk], p)) {
|
FD_SET(fd, pobits);
|
FD_SET(fd, pobits);
|
n++;
|
n++;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
*retval = n;
|
*retval = n;
|
return (0);
|
return (0);
|
}
|
}
|
|
|
/*ARGSUSED*/
|
/*ARGSUSED*/
|
int
|
int
|
seltrue(dev, flag, p)
|
seltrue(dev, flag, p)
|
dev_t dev;
|
dev_t dev;
|
int flag;
|
int flag;
|
struct proc *p;
|
struct proc *p;
|
{
|
{
|
|
|
return (1);
|
return (1);
|
}
|
}
|
|
|
/*
|
/*
|
* Record a select request.
|
* Record a select request.
|
*/
|
*/
|
void
|
void
|
selrecord(selector, sip)
|
selrecord(selector, sip)
|
struct proc *selector;
|
struct proc *selector;
|
struct selinfo *sip;
|
struct selinfo *sip;
|
{
|
{
|
struct proc *p;
|
struct proc *p;
|
pid_t mypid;
|
pid_t mypid;
|
|
|
mypid = selector->p_pid;
|
mypid = selector->p_pid;
|
if (sip->si_selpid == mypid)
|
if (sip->si_selpid == mypid)
|
return;
|
return;
|
if (sip->si_selpid && (p = pfind(sip->si_selpid)) &&
|
if (sip->si_selpid && (p = pfind(sip->si_selpid)) &&
|
p->p_wchan == (caddr_t)&selwait)
|
p->p_wchan == (caddr_t)&selwait)
|
sip->si_flags |= SI_COLL;
|
sip->si_flags |= SI_COLL;
|
else
|
else
|
sip->si_selpid = mypid;
|
sip->si_selpid = mypid;
|
}
|
}
|
|
|
/*
|
/*
|
* Do a wakeup when a selectable event occurs.
|
* Do a wakeup when a selectable event occurs.
|
*/
|
*/
|
void
|
void
|
selwakeup(sip)
|
selwakeup(sip)
|
register struct selinfo *sip;
|
register struct selinfo *sip;
|
{
|
{
|
register struct proc *p;
|
register struct proc *p;
|
int s;
|
int s;
|
|
|
if (sip->si_selpid == 0)
|
if (sip->si_selpid == 0)
|
return;
|
return;
|
if (sip->si_flags & SI_COLL) {
|
if (sip->si_flags & SI_COLL) {
|
nselcoll++;
|
nselcoll++;
|
sip->si_flags &= ~SI_COLL;
|
sip->si_flags &= ~SI_COLL;
|
wakeup((caddr_t)&selwait);
|
wakeup((caddr_t)&selwait);
|
}
|
}
|
p = pfind(sip->si_selpid);
|
p = pfind(sip->si_selpid);
|
sip->si_selpid = 0;
|
sip->si_selpid = 0;
|
if (p != NULL) {
|
if (p != NULL) {
|
s = splhigh();
|
s = splhigh();
|
if (p->p_wchan == (caddr_t)&selwait) {
|
if (p->p_wchan == (caddr_t)&selwait) {
|
if (p->p_stat == SSLEEP)
|
if (p->p_stat == SSLEEP)
|
setrunnable(p);
|
setrunnable(p);
|
else
|
else
|
unsleep(p);
|
unsleep(p);
|
} else if (p->p_flag & P_SELECT)
|
} else if (p->p_flag & P_SELECT)
|
p->p_flag &= ~P_SELECT;
|
p->p_flag &= ~P_SELECT;
|
splx(s);
|
splx(s);
|
}
|
}
|
}
|
}
|
|
|
void
|
void
|
pollscan(p, pl, nfd, retval)
|
pollscan(p, pl, nfd, retval)
|
struct proc *p;
|
struct proc *p;
|
struct pollfd *pl;
|
struct pollfd *pl;
|
int nfd;
|
int nfd;
|
register_t *retval;
|
register_t *retval;
|
{
|
{
|
register struct filedesc *fdp = p->p_fd;
|
register struct filedesc *fdp = p->p_fd;
|
register int msk, i;
|
register int msk, i;
|
struct file *fp;
|
struct file *fp;
|
int x, n = 0;
|
int x, n = 0;
|
static int flag[3] = { FREAD, FWRITE, 0 };
|
static int flag[3] = { FREAD, FWRITE, 0 };
|
static int pflag[3] = { POLLIN|POLLRDNORM, POLLOUT, POLLERR };
|
static int pflag[3] = { POLLIN|POLLRDNORM, POLLOUT, POLLERR };
|
|
|
/*
|
/*
|
* XXX: We need to implement the rest of the flags.
|
* XXX: We need to implement the rest of the flags.
|
*/
|
*/
|
for (i = 0; i < nfd; i++) {
|
for (i = 0; i < nfd; i++) {
|
/* Check the file descriptor. */
|
/* Check the file descriptor. */
|
if (pl[i].fd < 0)
|
if (pl[i].fd < 0)
|
continue;
|
continue;
|
if (pl[i].fd >= fdp->fd_nfiles) {
|
if (pl[i].fd >= fdp->fd_nfiles) {
|
pl[i].revents = POLLNVAL;
|
pl[i].revents = POLLNVAL;
|
n++;
|
n++;
|
continue;
|
continue;
|
}
|
}
|
|
|
fp = fdp->fd_ofiles[pl[i].fd];
|
fp = fdp->fd_ofiles[pl[i].fd];
|
if (fp == NULL) {
|
if (fp == NULL) {
|
pl[i].revents = POLLNVAL;
|
pl[i].revents = POLLNVAL;
|
n++;
|
n++;
|
continue;
|
continue;
|
}
|
}
|
for (x = msk = 0; msk < 3; msk++) {
|
for (x = msk = 0; msk < 3; msk++) {
|
if (pl[i].events & pflag[msk]) {
|
if (pl[i].events & pflag[msk]) {
|
if ((*fp->f_ops->fo_select)(fp, flag[msk], p)) {
|
if ((*fp->f_ops->fo_select)(fp, flag[msk], p)) {
|
pl[i].revents |= pflag[msk] &
|
pl[i].revents |= pflag[msk] &
|
pl[i].events;
|
pl[i].events;
|
x++;
|
x++;
|
}
|
}
|
}
|
}
|
}
|
}
|
if (x)
|
if (x)
|
n++;
|
n++;
|
}
|
}
|
*retval = n;
|
*retval = n;
|
}
|
}
|
|
|
/*
|
/*
|
* We are using the same mechanism as select only we encode/decode args
|
* We are using the same mechanism as select only we encode/decode args
|
* differently.
|
* differently.
|
*/
|
*/
|
int
|
int
|
sys_poll(p, v, retval)
|
sys_poll(p, v, retval)
|
register struct proc *p;
|
register struct proc *p;
|
void *v;
|
void *v;
|
register_t *retval;
|
register_t *retval;
|
{
|
{
|
struct sys_poll_args *uap = v;
|
struct sys_poll_args *uap = v;
|
size_t sz;
|
size_t sz;
|
struct pollfd pfds[4], *pl = pfds;
|
struct pollfd pfds[4], *pl = pfds;
|
int msec = SCARG(uap, timeout);
|
int msec = SCARG(uap, timeout);
|
struct timeval atv;
|
struct timeval atv;
|
int timo, ncoll, i, s, error, error2;
|
int timo, ncoll, i, s, error, error2;
|
extern int nselcoll, selwait;
|
extern int nselcoll, selwait;
|
|
|
/* Standards say no more than MAX_OPEN; this is possibly better. */
|
/* Standards say no more than MAX_OPEN; this is possibly better. */
|
if (SCARG(uap, nfds) > min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur,
|
if (SCARG(uap, nfds) > min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur,
|
maxfiles))
|
maxfiles))
|
return (EINVAL);
|
return (EINVAL);
|
|
|
sz = sizeof(struct pollfd) * SCARG(uap, nfds);
|
sz = sizeof(struct pollfd) * SCARG(uap, nfds);
|
|
|
/* optimize for the default case, of a small nfds value */
|
/* optimize for the default case, of a small nfds value */
|
if (sz > sizeof(pfds))
|
if (sz > sizeof(pfds))
|
pl = (struct pollfd *) malloc(sz, M_TEMP, M_WAITOK);
|
pl = (struct pollfd *) malloc(sz, M_TEMP, M_WAITOK);
|
|
|
if ((error = copyin(SCARG(uap, fds), pl, sz)) != 0)
|
if ((error = copyin(SCARG(uap, fds), pl, sz)) != 0)
|
goto bad;
|
goto bad;
|
|
|
for (i = 0; i < SCARG(uap, nfds); i++)
|
for (i = 0; i < SCARG(uap, nfds); i++)
|
pl[i].revents = 0;
|
pl[i].revents = 0;
|
|
|
if (msec != -1) {
|
if (msec != -1) {
|
atv.tv_sec = msec / 1000;
|
atv.tv_sec = msec / 1000;
|
atv.tv_usec = (msec - (atv.tv_sec * 1000)) * 1000;
|
atv.tv_usec = (msec - (atv.tv_sec * 1000)) * 1000;
|
|
|
if (itimerfix(&atv)) {
|
if (itimerfix(&atv)) {
|
error = EINVAL;
|
error = EINVAL;
|
goto done;
|
goto done;
|
}
|
}
|
s = splclock();
|
s = splclock();
|
timeradd(&atv, &time, &atv);
|
timeradd(&atv, &time, &atv);
|
timo = hzto(&atv);
|
timo = hzto(&atv);
|
/*
|
/*
|
* Avoid inadvertently sleeping forever.
|
* Avoid inadvertently sleeping forever.
|
*/
|
*/
|
if (timo == 0)
|
if (timo == 0)
|
timo = 1;
|
timo = 1;
|
splx(s);
|
splx(s);
|
} else
|
} else
|
timo = 0;
|
timo = 0;
|
|
|
retry:
|
retry:
|
ncoll = nselcoll;
|
ncoll = nselcoll;
|
p->p_flag |= P_SELECT;
|
p->p_flag |= P_SELECT;
|
pollscan(p, pl, SCARG(uap, nfds), retval);
|
pollscan(p, pl, SCARG(uap, nfds), retval);
|
if (*retval)
|
if (*retval)
|
goto done;
|
goto done;
|
s = splhigh();
|
s = splhigh();
|
if (timo && timercmp(&time, &atv, >=)) {
|
if (timo && timercmp(&time, &atv, >=)) {
|
splx(s);
|
splx(s);
|
goto done;
|
goto done;
|
}
|
}
|
if ((p->p_flag & P_SELECT) == 0 || nselcoll != ncoll) {
|
if ((p->p_flag & P_SELECT) == 0 || nselcoll != ncoll) {
|
splx(s);
|
splx(s);
|
goto retry;
|
goto retry;
|
}
|
}
|
p->p_flag &= ~P_SELECT;
|
p->p_flag &= ~P_SELECT;
|
error = tsleep((caddr_t)&selwait, PSOCK | PCATCH, "poll", timo);
|
error = tsleep((caddr_t)&selwait, PSOCK | PCATCH, "poll", timo);
|
splx(s);
|
splx(s);
|
if (error == 0)
|
if (error == 0)
|
goto retry;
|
goto retry;
|
|
|
done:
|
done:
|
p->p_flag &= ~P_SELECT;
|
p->p_flag &= ~P_SELECT;
|
/* poll is not restarted after signals... */
|
/* poll is not restarted after signals... */
|
if (error == ERESTART)
|
if (error == ERESTART)
|
error = EINTR;
|
error = EINTR;
|
if (error == EWOULDBLOCK)
|
if (error == EWOULDBLOCK)
|
error = 0;
|
error = 0;
|
if ((error2 = copyout(pl, SCARG(uap, fds), sz)) != 0)
|
if ((error2 = copyout(pl, SCARG(uap, fds), sz)) != 0)
|
error = error2;
|
error = error2;
|
bad:
|
bad:
|
if (pl != pfds)
|
if (pl != pfds)
|
free((char *) pl, M_TEMP);
|
free((char *) pl, M_TEMP);
|
return (error);
|
return (error);
|
}
|
}
|
#endif
|
#endif
|
|
|
