2b01dbdaa0
osf1_signal.c:1.41, amd64/amd64/trap.c:1.291, linux_socket.c:1.60, svr4_fcntl.c:1.36, svr4_ioctl.c:1.23, svr4_ipc.c:1.18, svr4_misc.c:1.81, svr4_signal.c:1.34, svr4_stat.c:1.21, svr4_stream.c:1.55, svr4_termios.c:1.13, svr4_ttold.c:1.15, svr4_util.h:1.10, ext2_alloc.c:1.43, i386/i386/trap.c:1.279, vm86.c:1.58, unaligned.c:1.12, imgact_elf.c:1.164, ffs_alloc.c:1.133: Now that Giant is acquired in uprintf() and tprintf(), the caller no longer leads to acquire Giant unless it also holds another mutex that would generate a lock order reversal when calling into these functions. Specifically not backed out is the acquisition of Giant in nfs_socket.c and rpcclnt.c, where local mutexes are held and would otherwise violate the lock order with Giant. This aligns this code more with the eventual locking of ttys. Suggested by: bde
171 lines
4.4 KiB
C
171 lines
4.4 KiB
C
/*-
|
|
* Copyright (c) 1998 Mark Newton
|
|
* Copyright (c) 1994 Christos Zoulas
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 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 SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/file.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <compat/svr4/svr4.h>
|
|
#include <compat/svr4/svr4_types.h>
|
|
#include <compat/svr4/svr4_util.h>
|
|
#include <compat/svr4/svr4_signal.h>
|
|
#include <compat/svr4/svr4_proto.h>
|
|
#include <compat/svr4/svr4_stropts.h>
|
|
#include <compat/svr4/svr4_ioctl.h>
|
|
#include <compat/svr4/svr4_termios.h>
|
|
#include <compat/svr4/svr4_ttold.h>
|
|
#include <compat/svr4/svr4_filio.h>
|
|
#include <compat/svr4/svr4_sockio.h>
|
|
|
|
#ifdef DEBUG_SVR4
|
|
static void svr4_decode_cmd(u_long, char *, char *, int *, int *);
|
|
/*
|
|
* Decode an ioctl command symbolically
|
|
*/
|
|
static void
|
|
svr4_decode_cmd(cmd, dir, c, num, argsiz)
|
|
u_long cmd;
|
|
char *dir, *c;
|
|
int *num, *argsiz;
|
|
{
|
|
if (cmd & SVR4_IOC_VOID)
|
|
*dir++ = 'V';
|
|
if (cmd & SVR4_IOC_IN)
|
|
*dir++ = 'R';
|
|
if (cmd & SVR4_IOC_OUT)
|
|
*dir++ = 'W';
|
|
*dir = '\0';
|
|
if (cmd & SVR4_IOC_INOUT)
|
|
*argsiz = (cmd >> 16) & 0xff;
|
|
else
|
|
*argsiz = -1;
|
|
|
|
*c = (cmd >> 8) & 0xff;
|
|
*num = cmd & 0xff;
|
|
}
|
|
#endif
|
|
|
|
int
|
|
svr4_sys_ioctl(td, uap)
|
|
register struct thread *td;
|
|
struct svr4_sys_ioctl_args *uap;
|
|
{
|
|
int *retval;
|
|
struct file *fp;
|
|
u_long cmd;
|
|
int (*fun)(struct file *, struct thread *, register_t *,
|
|
int, u_long, caddr_t);
|
|
int error;
|
|
#ifdef DEBUG_SVR4
|
|
char dir[4];
|
|
char c;
|
|
int num;
|
|
int argsiz;
|
|
|
|
svr4_decode_cmd(uap->com, dir, &c, &num, &argsiz);
|
|
|
|
DPRINTF(("svr4_ioctl[%lx](%d, _IO%s(%c, %d, %d), %p);\n", uap->com, uap->fd,
|
|
dir, c, num, argsiz, uap->data));
|
|
#endif
|
|
retval = td->td_retval;
|
|
cmd = uap->com;
|
|
|
|
if ((error = fget(td, uap->fd, &fp)) != 0)
|
|
return (error);
|
|
|
|
if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
|
|
fdrop(fp, td);
|
|
return EBADF;
|
|
}
|
|
|
|
#if defined(DEBUG_SVR4)
|
|
if (fp->f_type == DTYPE_SOCKET) {
|
|
struct socket *so = fp->f_data;
|
|
DPRINTF(("<<< IN: so_state = 0x%x\n", so->so_state));
|
|
}
|
|
#endif
|
|
|
|
switch (cmd & 0xff00) {
|
|
#ifndef BURN_BRIDGES
|
|
case SVR4_tIOC:
|
|
DPRINTF(("ttold\n"));
|
|
fun = svr4_ttold_ioctl;
|
|
break;
|
|
#endif
|
|
|
|
case SVR4_TIOC:
|
|
DPRINTF(("term\n"));
|
|
fun = svr4_term_ioctl;
|
|
break;
|
|
|
|
case SVR4_STR:
|
|
DPRINTF(("stream\n"));
|
|
fun = svr4_stream_ioctl;
|
|
break;
|
|
|
|
case SVR4_FIOC:
|
|
DPRINTF(("file\n"));
|
|
fun = svr4_fil_ioctl;
|
|
break;
|
|
|
|
case SVR4_SIOC:
|
|
DPRINTF(("socket\n"));
|
|
fun = svr4_sock_ioctl;
|
|
break;
|
|
|
|
case SVR4_XIOC:
|
|
/* We do not support those */
|
|
fdrop(fp, td);
|
|
return EINVAL;
|
|
|
|
default:
|
|
fdrop(fp, td);
|
|
DPRINTF(("Unimplemented ioctl %lx\n", cmd));
|
|
return 0; /* XXX: really ENOSYS */
|
|
}
|
|
#if defined(DEBUG_SVR4)
|
|
if (fp->f_type == DTYPE_SOCKET) {
|
|
struct socket *so;
|
|
|
|
so = fp->f_data;
|
|
DPRINTF((">>> OUT: so_state = 0x%x\n", so->so_state));
|
|
}
|
|
#endif
|
|
error = (*fun)(fp, td, retval, uap->fd, cmd, uap->data);
|
|
fdrop(fp, td);
|
|
return (error);
|
|
}
|