Commit Graph

76 Commits

Author SHA1 Message Date
Christophe Fergeau b8d8e8fde3 man: virtfs-proxy-helper: Rework awkward sentence
There was a 'capbilities' typo in this man page. This commit
reformulates the sentence the typo was in to make it easier to grasp.
This is based on a suggestion from Eric Blake.

Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-02-11 15:15:46 +03:00
Peter Maydell fbc0412709 9pfs: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1453832250-766-18-git-send-email-peter.maydell@linaro.org
2016-01-29 15:07:23 +00:00
Peter Maydell ba3fb2f023 * chardev support for TLS and leak fix
* NBD fix from Denis
 * condvar fix from Dave
 * kvm_stat and dump-guest-memory almost rewrite
 * mem-prealloc fix from Luiz
 * manpage style improvement
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* chardev support for TLS and leak fix
* NBD fix from Denis
* condvar fix from Dave
* kvm_stat and dump-guest-memory almost rewrite
* mem-prealloc fix from Luiz
* manpage style improvement

# gpg: Signature made Tue 26 Jan 2016 14:58:18 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream: (49 commits)
  scripts/dump-guest-memory.py: Fix module docstring
  scripts/dump-guest-memory.py: Introduce multi-arch support
  scripts/dump-guest-memory.py: Cleanup functions
  scripts/dump-guest-memory.py: Improve python 3 compatibility
  scripts/dump-guest-memory.py: Make methods functions
  scripts/dump-guest-memory.py: Move constants to the top
  nbd: add missed aio_context_acquire in nbd_export_new
  memory: exit when hugepage allocation fails if mem-prealloc
  cpus: use broadcast on qemu_pause_cond
  scripts/kvm/kvm_stat: Add optparse description
  scripts/kvm/kvm_stat: Add interactive filtering
  scripts/kvm/kvm_stat: Fixup filtering
  scripts/kvm/kvm_stat: Fix rlimit for unprivileged users
  scripts/kvm/kvm_stat: Read event values as u64
  scripts/kvm/kvm_stat: Cleanup and pre-init perf_event_attr
  scripts/kvm/kvm_stat: Fix output formatting
  scripts/kvm/kvm_stat: Make tui function a class
  scripts/kvm/kvm_stat: Remove unneeded X86_EXIT_REASONS
  scripts/kvm/kvm_stat: Group arch specific data
  scripts/kvm/kvm_stat: Cleanup of Event class
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-01-26 15:09:13 +00:00
Sitsofe Wheeler 8485140fa0 docs: Style the command and its options in the synopsis
Signed-off-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Message-Id: <1452718226-25001-1-git-send-email-sitsofe@yahoo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26 15:58:11 +01:00
Greg Kurz ea753f3219 fsdev: use error_report() instead of fprintf(stderr)
Only fix the code that gets built into QEMU.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
2016-01-22 15:12:18 +01:00
Wei Liu 0e2082d9e5 9pfs: make pdu_{,un}marshal proper functions
Factor out v9fs_iov_v{,un}marshal. Implement pdu_{,un}marshal with those
functions.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2016-01-08 14:53:39 +05:30
Wei Liu 2209bd050a fsdev: rename virtio-9p-marshal.{c,h} to 9p-iov-marshal.{c,h}
And rename v9fs_marshal to v9fs_iov_marshal, v9fs_unmarshal to
v9fs_iov_unmarshal.

The rationale behind this change is that, this marshalling interface is
used both by virtio and proxy helper. Renaming files and functions to
reflect the true nature of this interface.

Xen transport is going to have its own marshalling interface.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2016-01-08 14:35:06 +05:30
Wei Liu 829dd2861a fsdev: break out 9p-marshal.{c,h} from virtio-9p-marshal.{c,h}
Break out some generic functions for marshaling 9p state. Pure code
motion plus minor fixes for build system.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2016-01-08 12:57:25 +05:30
Wei Liu 494a8ebe71 9pfs: rename virtio-9p-proxy.{c,h} to 9p-proxy.{c,h}
Those two files are not virtio specific. Rename them to use generic
names.

Fix includes in various C files. Change define guards and comments
in header files.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2016-01-08 12:38:15 +05:30
Paolo Bonzini 49f817caaf fsdev-proxy-helper: avoid TOC/TOU race
There is a minor time of check/time of use race between statfs and chroot.
It can be fixed easily by stat-ing the root after it has been changed.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
2015-11-30 12:31:53 +01:00
Daniel P. Berrange d7646f241c maint: remove unused include for dirent.h
A number of files were including dirent.h but not using any
of the functions it provides

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-09-11 10:21:38 +03:00
Stefan Hajnoczi f8d30a4f96 virtfs-proxy-helper: fail gracefully if socket path is too long
Replace the assertion check with graceful failure when the socket path
is too long.  Programs should not crash on invalid input.  Print an
error message and exit properly.

Cc: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2015-06-16 20:32:29 +05:30
Stefan Hajnoczi bf6667d63e virtfs-proxy-helper: add missing long option terminator
The getopt_long(3) long options array must have a zeroed terminator.

This patch solves a segmentation fault when an unknown command-line
option is encountered:

  $ fsdev/virtfs-proxy-helper --help
  Segmentation fault (core dumped)

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2015-06-16 20:32:29 +05:30
Viswesh de7ad4ce1f Fix typos in comments
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Viswesh <visweshn92@gmail.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-03-19 11:30:37 +03:00
Shannon Zhao 25ee9a7fa3 virtfs-proxy: Fix possible overflow
It's detected by coverity. The socket name specified
should fit in the sockadd_un.sun_path. If not abort.

Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2015-03-16 13:29:12 +05:30
Shannon Zhao 821c447675 fsdev/virtfs-proxy-helper: Fix improper use of negative value
It's detected by coverity. Check the return value of proxy_marshal.

Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2015-03-16 11:50:07 +05:30
Gonglei 88ea8ed74c virtfs-proxy-helper: Fix possible socket leak.
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-02-10 09:27:20 +03:00
Tim Comer b0f9300ca3 virtfs-proxy-helper: fix call to accept
The current code calls accept() without initializing the size parameter
which means the accept call might write too much to the stack.

URL: https://bugs.gentoo.org/486714
Signed-off-by: Tim Comer <comer0@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-04-28 08:55:32 +04:00
Aneesh Kumar K.V 993c91a0e9 hw/9pfs: Include virtio-9p-device.o in build
After commit ba1183da9a we are including
hw/Makefile.objs directly from Makefile.target. Make sure hw/Makefile.objs
rules doesn't depend on variable defined in Makefile.objs

Tested-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2014-03-04 09:20:49 +05:30
Markus Armbruster d77f7779b4 fsdev: Fix overrun after readlink() fills buffer completely
readlink() returns the number of bytes written to the buffer, and it
doesn't write a terminating null byte.  do_readlink() writes it
itself.  Overruns the buffer when readlink() filled it completely.

Fix by reserving space for the null byte when calling readlink(), like
we do elsewhere.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2014-02-26 12:24:07 +05:30
Stefan Weil b58c86e1e4 fsdev: Fix potential memory leak
This leak was reported by cppcheck.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: M. Mohan Kumar <mohan@in.ibm.com>
Message-id: 1371376960-18192-1-git-send-email-sw@weilnetz.de
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-09 13:38:56 -05:00
Dong Xu Wang c7e775e4dd remove double semicolons
Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-05-12 13:25:55 +04:00
Markus Armbruster 606017de2f virtfs-proxy-helper: Fix unchecked strdup() by conv. to g_strdup()
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-30 11:14:46 +01:00
Paolo Bonzini 82cb6b041c build: remove extra-obj-y
extra-obj-y is somewhat complicated to understand.  Replace it with a
special CONFIG_ALL symbol that is defined only at toplevel.
This limits the case of directories defining more than one
*-obj-y target.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-01-26 13:15:37 +00:00
Paolo Bonzini 4d4545743f qemu-option: move standard option definitions out of qemu-config.c
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-01-12 17:17:53 +01:00
Paolo Bonzini 1de7afc984 misc: move include files to include/qemu/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19 08:32:39 +01:00
Paolo Bonzini 9fd2ecdc8c virtfs-proxy-helper: use setresuid and setresgid
The setfsuid and setfsgid system calls are obscure and they complicate
the error checking (that glibc's warn_unused_result "feature" forces
us to do).  Switch to the standard setresuid and setresgid functions.

Signed-off-by: Paolo Bonzini <pbonini@redhat.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-12-05 21:55:54 +05:30
Eduardo Habkost 017cf5b1d2 qemu-fsdev-dummy.c: Include module.h
module.h is where machine_init() is defined, but qemu-fsdev-dummy.c
doesn't include it.

The header is probably being included by accident because some other
headers are including qemu-common.h, but those headers should eventually
stop including qemu-common.h.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-11-15 02:21:03 +01:00
Paolo Bonzini ee20477d24 build: move fsdev/ objects to nested Makefile.objs
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-06-07 09:21:13 +02:00
Stefan Weil 071c939458 Replace Qemu by QEMU in user visible documentation
The official spelling is QEMU.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-04-07 13:58:06 +00:00
M. Mohan Kumar 5fc6dbae74 fsdev: Fix parameter parsing for proxy helper
This fixes a crash when using sockfd with proxy FsDriver

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-30 10:54:16 +05:30
Aneesh Kumar K.V 2c30dd744a hw/9pfs: Add new security model mapped-file.
This enable us to do passthrough equivalent security model on NFS directory.
NFS server mostly do root squashing and don't support xattr. Hence we cannot
use 'passthrough' or 'mapped' security model

Also added "mapped-xattr" security to indicate earlier "mapped" security model
Older name is still supported.

POSIX rules regarding ctime update on chmod are not followed by this security model.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-19 12:21:11 +05:30
Stefan Weil c5c7d3f0a7 virtfs-proxy-helper: Add missing printf format attribute
Every function with printf like arguments must have it
(see file HACKING), so add it.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-01-13 10:37:00 +00:00
Stefan Weil e7e4a6ccae virtfs-proxy-helper: Clean include files
The common standard include files are already included via qemu-common.h,
and for the socket related include files there is qemu_socket.h, so the
code can be reduced by some lines.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-01-13 10:37:00 +00:00
Stefan Weil 822b635d90 virtfs-proxy-helper: Fix compilation on newer systems
Include file attr/xattr.h is not available on "newer" systems
(for example Fedora 12 or Debian Squeeze).

See comments in qemu-xattr.h for more information.
This file handles the system dependencies automatically.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-01-13 10:37:00 +00:00
M. Mohan Kumar 84a87cc4cc hw/9pfs: Add support to use named socket for proxy FS
Add option to use named socket for communicating between proxy helper
and qemu proxy FS. Access to socket can be given by using command line
options -u and -g.

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 21:23:55 +05:30
M. Mohan Kumar a2d8f1beb1 hw/9pfs: man page for proxy helper
Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 21:23:53 +05:30
M. Mohan Kumar d090e452d4 hw/9pfs: Proxy getversion
Add proxy getversion to get generation number

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 20:20:55 +05:30
M. Mohan Kumar d52b09e475 hw/9pfs: xattr interfaces in proxy filesystem driver
Add xattr support for proxy FS

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 20:20:46 +05:30
M. Mohan Kumar ea75fc4ec5 hw/9pfs: File ownership and others
Add file ownership interfaces like chmod/chown, utime update, rename,
remove and truncating files for proxy FS

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 20:19:48 +05:30
M. Mohan Kumar b178adc3e7 hw/9pfs: Add stat/readlink/statfs for proxy FS
Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 20:19:39 +05:30
M. Mohan Kumar 39f8c32c3f hw/9pfs: Create other filesystem objects
Add interfaces to create filesystem objects like directory,
device nodes, symbolic links, links for proxy filesytem driver

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 20:18:09 +05:30
M. Mohan Kumar daf0b9aca9 hw/9pfs: Open and create files
Add interfaces to open and create files for proxy file system driver.

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 20:14:28 +05:30
M. Mohan Kumar 17bff52b62 hw/9pfs: File system helper process for qemu 9p proxy FS
Provide root privilege access to QEMU 9p proxy filesystem using socket
communication.

Proxy helper is started by root user as:
~ # virtfs-proxy-helper -f|--fd <socket descriptor> -p|--path <path-to-share>

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 20:14:02 +05:30
M. Mohan Kumar 4c793dda22 hw/9pfs: Add new proxy filesystem driver
Add new proxy filesystem driver to add root privilege to qemu process.
It needs a helper process to be started by root user.

Following command line can be used to utilize proxy filesystem driver
-virtfs proxy,id=<id>,mount_tag=<tag>,socket_fd=<socket-fd>

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 20:13:39 +05:30
M. Mohan Kumar ddca7f86ac hw/9pfs: Add validation to {un}marshal code
Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 19:53:22 +05:30
M. Mohan Kumar 10925bf089 hw/9pfs: Move pdu_marshal/unmarshal code to a seperate file
Move p9 marshaling/unmarshaling code to a separate file so that
proxy filesytem driver can use these calls. Also made marshaling
code generic to accept "struct iovec" instead of V9fsPDU.

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 19:51:28 +05:30
Aneesh Kumar K.V 99519f0a77 hw/9pfs: Move opt validation to FsDriver callback
This remove all conditional code from common code path and
make opt validation a FSDriver callback.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04 19:51:28 +05:30
Aneesh Kumar K.V 2f008a8c97 hw/9pfs: Use the correct signed type for different variables
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-12-21 12:37:23 +05:30
Aneesh Kumar K.V 8b88827222 hw/9pfs: Use the correct file descriptor in Fsdriver Callback
Fsdriver callback that operate on file descriptor need to
differentiate between directory fd and file fd.

Based on the original patch from Sassan Panahinejad <sassan@sassan.me.uk>

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-12-04 22:35:28 +05:30