mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: cdev: change license of exported header files to MIT license firewire: cdev: comment fixlet firewire: cdev: iso packet documentation firewire: cdev: fix information leak firewire: cdev: require quadlet-aligned headers for transmit packets firewire: cdev: disallow receive packets without header
This commit is contained in:
Linus Torvalds
commit
2fed94c032
@ -960,6 +960,8 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
|
||||
u.packet.header_length = GET_HEADER_LENGTH(control);
|
||||
|
||||
if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) {
|
||||
if (u.packet.header_length % 4 != 0)
|
||||
return -EINVAL;
|
||||
header_length = u.packet.header_length;
|
||||
} else {
|
||||
/*
|
||||
@ -969,7 +971,8 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
|
||||
if (ctx->header_size == 0) {
|
||||
if (u.packet.header_length > 0)
|
||||
return -EINVAL;
|
||||
} else if (u.packet.header_length % ctx->header_size != 0) {
|
||||
} else if (u.packet.header_length == 0 ||
|
||||
u.packet.header_length % ctx->header_size != 0) {
|
||||
return -EINVAL;
|
||||
}
|
||||
header_length = 0;
|
||||
@ -1354,24 +1357,24 @@ static int dispatch_ioctl(struct client *client,
|
||||
return -ENODEV;
|
||||
|
||||
if (_IOC_TYPE(cmd) != '#' ||
|
||||
_IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers))
|
||||
_IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers) ||
|
||||
_IOC_SIZE(cmd) > sizeof(buffer))
|
||||
return -EINVAL;
|
||||
|
||||
if (_IOC_DIR(cmd) & _IOC_WRITE) {
|
||||
if (_IOC_SIZE(cmd) > sizeof(buffer) ||
|
||||
copy_from_user(&buffer, arg, _IOC_SIZE(cmd)))
|
||||
if (_IOC_DIR(cmd) == _IOC_READ)
|
||||
memset(&buffer, 0, _IOC_SIZE(cmd));
|
||||
|
||||
if (_IOC_DIR(cmd) & _IOC_WRITE)
|
||||
if (copy_from_user(&buffer, arg, _IOC_SIZE(cmd)))
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
ret = ioctl_handlers[_IOC_NR(cmd)](client, &buffer);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (_IOC_DIR(cmd) & _IOC_READ) {
|
||||
if (_IOC_SIZE(cmd) > sizeof(buffer) ||
|
||||
copy_to_user(arg, &buffer, _IOC_SIZE(cmd)))
|
||||
if (_IOC_DIR(cmd) & _IOC_READ)
|
||||
if (copy_to_user(arg, &buffer, _IOC_SIZE(cmd)))
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -1,21 +1,26 @@
|
||||
/*
|
||||
* Char device interface.
|
||||
*
|
||||
* Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
|
||||
* Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
* copy of this software and associated documentation files (the "Software"),
|
||||
* to deal in the Software without restriction, including without limitation
|
||||
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||
* and/or sell copies of the Software, and to permit persons to whom the
|
||||
* Software is furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
* The above copyright notice and this permission notice (including the next
|
||||
* paragraph) shall be included in all copies or substantial portions of the
|
||||
* Software.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software Foundation,
|
||||
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||||
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||||
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||||
* DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_FIREWIRE_CDEV_H
|
||||
@ -438,7 +443,7 @@ struct fw_cdev_remove_descriptor {
|
||||
* @type: %FW_CDEV_ISO_CONTEXT_TRANSMIT or %FW_CDEV_ISO_CONTEXT_RECEIVE
|
||||
* @header_size: Header size to strip for receive contexts
|
||||
* @channel: Channel to bind to
|
||||
* @speed: Speed to transmit at
|
||||
* @speed: Speed for transmit contexts
|
||||
* @closure: To be returned in &fw_cdev_event_iso_interrupt
|
||||
* @handle: Handle to context, written back by kernel
|
||||
*
|
||||
@ -451,6 +456,9 @@ struct fw_cdev_remove_descriptor {
|
||||
* If a context was successfully created, the kernel writes back a handle to the
|
||||
* context, which must be passed in for subsequent operations on that context.
|
||||
*
|
||||
* For receive contexts, @header_size must be at least 4 and must be a multiple
|
||||
* of 4.
|
||||
*
|
||||
* Note that the effect of a @header_size > 4 depends on
|
||||
* &fw_cdev_get_info.version, as documented at &fw_cdev_event_iso_interrupt.
|
||||
*/
|
||||
@ -481,10 +489,34 @@ struct fw_cdev_create_iso_context {
|
||||
*
|
||||
* &struct fw_cdev_iso_packet is used to describe isochronous packet queues.
|
||||
*
|
||||
* Use the FW_CDEV_ISO_ macros to fill in @control. The sy and tag fields are
|
||||
* specified by IEEE 1394a and IEC 61883.
|
||||
* Use the FW_CDEV_ISO_ macros to fill in @control.
|
||||
*
|
||||
* FIXME - finish this documentation
|
||||
* For transmit packets, the header length must be a multiple of 4 and specifies
|
||||
* the numbers of bytes in @header that will be prepended to the packet's
|
||||
* payload; these bytes are copied into the kernel and will not be accessed
|
||||
* after the ioctl has returned. The sy and tag fields are copied to the iso
|
||||
* packet header (these fields are specified by IEEE 1394a and IEC 61883-1).
|
||||
* The skip flag specifies that no packet is to be sent in a frame; when using
|
||||
* this, all other fields except the interrupt flag must be zero.
|
||||
*
|
||||
* For receive packets, the header length must be a multiple of the context's
|
||||
* header size; if the header length is larger than the context's header size,
|
||||
* multiple packets are queued for this entry. The sy and tag fields are
|
||||
* ignored. If the sync flag is set, the context drops all packets until
|
||||
* a packet with a matching sy field is received (the sync value to wait for is
|
||||
* specified in the &fw_cdev_start_iso structure). The payload length defines
|
||||
* how many payload bytes can be received for one packet (in addition to payload
|
||||
* quadlets that have been defined as headers and are stripped and returned in
|
||||
* the &fw_cdev_event_iso_interrupt structure). If more bytes are received, the
|
||||
* additional bytes are dropped. If less bytes are received, the remaining
|
||||
* bytes in this part of the payload buffer will not be written to, not even by
|
||||
* the next packet, i.e., packets received in consecutive frames will not
|
||||
* necessarily be consecutive in memory. If an entry has queued multiple
|
||||
* packets, the payload length is divided equally among them.
|
||||
*
|
||||
* When a packet with the interrupt flag set has been completed, the
|
||||
* &fw_cdev_event_iso_interrupt event will be sent. An entry that has queued
|
||||
* multiple receive packets is completed when its last packet is completed.
|
||||
*/
|
||||
struct fw_cdev_iso_packet {
|
||||
__u32 control;
|
||||
@ -501,7 +533,7 @@ struct fw_cdev_iso_packet {
|
||||
* Queue a number of isochronous packets for reception or transmission.
|
||||
* This ioctl takes a pointer to an array of &fw_cdev_iso_packet structs,
|
||||
* which describe how to transmit from or receive into a contiguous region
|
||||
* of a mmap()'ed payload buffer. As part of the packet descriptors,
|
||||
* of a mmap()'ed payload buffer. As part of transmit packet descriptors,
|
||||
* a series of headers can be supplied, which will be prepended to the
|
||||
* payload during DMA.
|
||||
*
|
||||
@ -620,8 +652,8 @@ struct fw_cdev_get_cycle_timer2 {
|
||||
* instead of allocated.
|
||||
* An %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED event concludes this operation.
|
||||
*
|
||||
* To summarize, %FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE allocates iso resources
|
||||
* for the lifetime of the fd or handle.
|
||||
* To summarize, %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE allocates iso resources
|
||||
* for the lifetime of the fd or @handle.
|
||||
* In contrast, %FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE allocates iso resources
|
||||
* for the duration of a bus generation.
|
||||
*
|
||||
|
||||
@ -1,3 +1,28 @@
|
||||
/*
|
||||
* IEEE 1394 constants.
|
||||
*
|
||||
* Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net>
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
* copy of this software and associated documentation files (the "Software"),
|
||||
* to deal in the Software without restriction, including without limitation
|
||||
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||
* and/or sell copies of the Software, and to permit persons to whom the
|
||||
* Software is furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice (including the next
|
||||
* paragraph) shall be included in all copies or substantial portions of the
|
||||
* Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||||
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||||
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||||
* DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_FIREWIRE_CONSTANTS_H
|
||||
#define _LINUX_FIREWIRE_CONSTANTS_H
|
||||
|
||||
@ -21,7 +46,7 @@
|
||||
#define EXTCODE_WRAP_ADD 0x6
|
||||
#define EXTCODE_VENDOR_DEPENDENT 0x7
|
||||
|
||||
/* Juju specific tcodes */
|
||||
/* Linux firewire-core (Juju) specific tcodes */
|
||||
#define TCODE_LOCK_MASK_SWAP (0x10 | EXTCODE_MASK_SWAP)
|
||||
#define TCODE_LOCK_COMPARE_SWAP (0x10 | EXTCODE_COMPARE_SWAP)
|
||||
#define TCODE_LOCK_FETCH_ADD (0x10 | EXTCODE_FETCH_ADD)
|
||||
@ -36,7 +61,7 @@
|
||||
#define RCODE_TYPE_ERROR 0x6
|
||||
#define RCODE_ADDRESS_ERROR 0x7
|
||||
|
||||
/* Juju specific rcodes */
|
||||
/* Linux firewire-core (Juju) specific rcodes */
|
||||
#define RCODE_SEND_ERROR 0x10
|
||||
#define RCODE_CANCELLED 0x11
|
||||
#define RCODE_BUSY 0x12
|
||||
|
||||
Loading…
Reference in New Issue
Block a user