Commit Graph

24 Commits

Author SHA1 Message Date
Bandan Das
93d592e3d1 usb-mtp: add support for basic mtp events
When the host polls for events, we check our
events qlist and send one event at a time. Also, note
that the event packet needs to be sent in one go, so
I increased the max packet size to 64.

Tested with a linux guest.

Signed-off-by: Bandan Das <bsd@redhat.com>
Message-id: 1448314625-3855-5-git-send-email-bsd@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-12-15 09:26:10 +01:00
Bandan Das
8e3e3897ce usb-mtp: Add support for inotify based file monitoring
For now, we use inotify watches to track only a small number of
events, namely, add, delete and modify. Note that for delete, the kernel
already deactivates the watch for us and we just need to
take care of modifying our internal state.

inotify is a linux only mechanism.

Suggested-by: Gerd Hoffman <kraxel@redhat.com>
Signed-off-by: Bandan Das <bsd@redhat.com>
Message-id: 1448314625-3855-4-git-send-email-bsd@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-12-15 09:26:10 +01:00
Bandan Das
b3c4d4250f usb-mtp: free objects on a mtp reset
On a reset, call usb_mtp_object_free on all objects and their children

Signed-off-by: Bandan Das <bsd@redhat.com>
Message-id: 1448314625-3855-3-git-send-email-bsd@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-12-15 09:25:27 +01:00
Bandan Das
4c7a67f5cd usb-mtp: use a list for keeping track of children
To support adding/removal of objects, we will need to update
the object cache hierarchy we have built internally. Convert
to using a Qlist for easier management.

Signed-off-by: Bandan Das <bsd@redhat.com>
Message-id: 1448314625-3855-2-git-send-email-bsd@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-12-15 09:25:27 +01:00
Markus Armbruster
98f343395e usb: Use g_new() & friends where that makes obvious sense
g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
for two reasons.  One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.

This commit only touches allocations with size arguments of the form
sizeof(T).  Same Coccinelle semantic patch as in commit b45c03f.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-11-06 15:42:38 +03:00
Gonglei
e60baebd40 usb-mtp: fix segmentation fault
When x-root property not be configured, will cause segfault
because of null pointer accessing. Add a check for s->root
property avoid segfault.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-08 13:01:07 +02:00
Gonglei
7c03a899e6 usb: usb-mtp QOMify
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-08 13:01:07 +02:00
Gonglei
df9bb6660d usb-mtp: convert init to realize
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-09-23 12:51:07 +02:00
Gonglei
d0657b2aab usb: don't use 'Yoda conditions'
imitate nearby code about using '!value' or 'value == NULL'

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-08-15 18:54:06 +04:00
Gerd Hoffmann
cf679caf91 usb: mtp: tag root property as experimental
Reason: we don't want commit to that interface yet.  Possibly
the implementation will be switched over to use fsdev.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-07-23 08:55:40 +02:00
Gerd Hoffmann
13d54125a3 mtp: linux guest detection fix.
Attach a name to the MTP interface (android phones have this too).

With this patch recent linux guests such as fedora 20 happily detect and
use the device.  It shows up in nautilus file manager automatically, and
simple-mtpfs can mount it.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-07-11 12:31:41 +02:00
Gerd Hoffmann
22513a9b44 usb-mtp: handle usb_mtp_get_object failure
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:41:07 +02:00
Gerd Hoffmann
68206d7342 usb-mtp: handle lseek failure
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:41:07 +02:00
Gerd Hoffmann
36084d7e31 usb-mtp: use bool to track MTPObject init status
Stop setting nchildren to -1.  Use separate bool variable to track
whenever we've already fetched the child objects instead.

Also make nchildren unsigned.

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:41:07 +02:00
Gerd Hoffmann
8ebb876357 usb: mtp: reply INCOMPLETE_TRANSFER on read errors
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05 12:58:02 +02:00
Gerd Hoffmann
afa82daf16 usb: mtp: fix possible buffer overflow
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05 12:57:58 +02:00
Gerd Hoffmann
9cd04ccf75 usb: mtp: drop data-out hexdump
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05 12:57:53 +02:00
Gerd Hoffmann
457d397a24 usb: mtp: avoid empty description string
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05 12:57:49 +02:00
Gerd Hoffmann
2dc7fdf33d usb: mtp: fix error path memory leak
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05 12:57:45 +02:00
Gerd Hoffmann
9e4eff5b54 usb: mtp: fix serial (must be exact 32 chars)
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05 12:57:41 +02:00
Gerd Hoffmann
f7eaed8555 usb: mtp: fix version (is decimal not bcd)
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05 12:57:35 +02:00
Gerd Hoffmann
ada435f47e usb: mtp: fix usb_mtp_add_u64
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05 12:57:30 +02:00
Gerd Hoffmann
1c76551fae usb: mtp: replace debug printfs with trace points
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05 12:57:21 +02:00
Gerd Hoffmann
840a178c94 usb: mtp filesharing
Implementation of a USB Media Transfer Device device for easy
filesharing.  Read-only.  No access control inside qemu, it will
happily export any file it is able to open to the guest, i.e.
standard unix access rights for the qemu process apply.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-04-23 10:28:14 +02:00