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2013-01-30hw/9pfs: Fix unchecked strdup() by converting to g_strdup()Markus Armbruster
Note: the allocation in virtio_9p_init() is still leaked. To be fixed in a followup commit. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-30g_strdup(NULL) returns NULL; simplifyMarkus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-30g_malloc(0) and g_malloc0(0) return NULL; simplifyMarkus Armbruster
Once upon a time, it was decided that qemu_malloc(0) should abort. Switching to glib retired that bright idea. Some code that was added to cope with it (e.g. in commits 702ef63, b76b6e9) is still around. Bury it. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-14Merge remote-tracking branch 'mst/tags/for_anthony' into stagingAnthony Liguori
pci,virtio This further optimizes MSIX handling in virtio-pci. Also included is pci cleanup by Paolo, and pci device assignment fix by Alex. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> * mst/tags/for_anthony: pci-assign: Enable MSIX on device to match guest pci: use constants for devices under the 1B36 device ID, document them ivshmem: use symbolic constant for PCI ID, add to pci-ids.txt virtio-9p: use symbolic constant, add to pci-ids.txt reorganize pci-ids.txt docs: move pci-ids.txt to docs/specs/ vhost: backend masking support vhost: set started flag while start is in progress virtio-net: set/clear vhost_started in reverse order virtio: backend virtqueue notifier masking virtio-pci: cache msix messages kvm: add stub for update msi route msix: add api to access msix message virtio: don't waste irqfds on control vqs
2013-01-10Make all static TypeInfos constAndreas Färber
Since 39bffca2030950ef6efe57c2fac8327a45ae1015 (qdev: register all types natively through QEMU Object Model), TypeInfo as used in the common, non-iterative pattern is no longer amended with information and should therefore be const. Fix the documented QOM examples: sed -i 's/static TypeInfo/static const TypeInfo/g' include/qom/object.h Since frequently the wrong examples are being copied by contributors of new devices, fix all types in the tree: sed -i 's/^static TypeInfo/static const TypeInfo/g' */*.c sed -i 's/^static TypeInfo/static const TypeInfo/g' */*/*.c This also avoids to piggy-back these changes onto real functional changes or other refactorings. Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-08virtio-9p: use symbolic constant, add to pci-ids.txtPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19migration: move include files to include/migration/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19block: move include files to include/block/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19janitor: add guards to headersPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19janitor: do not include qemu-char everywherePaolo Bonzini
Touching char/char.h basically causes the whole of QEMU to be rebuilt. Avoid this, it is usually unnecessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-06Merge branch 'trivial-patches' of git://github.com/stefanha/qemuAurelien Jarno
* 'trivial-patches' of git://github.com/stefanha/qemu: versatilepb: Use symbolic indices for ARM PIC qdev: kill bogus comment qemu-barrier: Fix compiler version check for future gcc versions hw: Add missing 'static' attribute for QEMUMachine cleanup useless return sentence qemu-sockets: Fix compiler warning (regression for MinGW) vnc: Fix spelling (hellmen -> hellman) in comment slirp: Fix spelling in comment (enought -> enough, insure -> ensure) tcg/arm: Use tcg_out_mov_reg rather than inline equivalent code cpu: Add missing 'static' attribute to qemu_global_mutex configure: Support empty target list (--target-list=) hw: Fix return value check for bdrv_read, bdrv_write
2012-10-05Remove libhwStefan Weil
The entries for libhw* are no longer needed in .gitignore. There is also no longer a difference between common-obj-y and hw-obj-y, so one of those two macros is sufficient. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-05cleanup useless return sentenceAmos Kong
This patch cleans up return sentences in the end of void functions. Reported-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
2012-10-05virtio-9p: avoid unwarranted uses of strncpyJim Meyering
In all of these cases, the uses of strncpy were unnecessary, since at each point of use we know that the NUL-terminated source bytes fit in the destination buffer. Use memcpy in place of strncpy. Acked-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-05hw/9pfs: avoid buffer overrunJim Meyering
v9fs_add_dir_node and qemu_v9fs_synth_add_file used strncpy to form node->name, which requires NUL-termination, but strncpy does not ensure NUL-termination. Use pstrcpy, which does. Acked-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-07-31hw/9pfs: Fix assert when disabling migrationAneesh Kumar K.V
For 9p we can get the attach request multiple times for the same export. So don't adding migration blocker for every attach request. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-07-09Merge remote-tracking branch 'mjt/mjt-iov2' into stagingAnthony Liguori
* mjt/mjt-iov2: rewrite iov_send_recv() and move it to iov.c cleanup qemu_co_sendv(), qemu_co_recvv() and friends export iov_send_recv() and use it in iov_send() and iov_recv() rename qemu_sendv to iov_send, change proto and move declarations to iov.h change qemu_iovec_to_buf() to match other to,from_buf functions consolidate qemu_iovec_copy() and qemu_iovec_concat() and make them consistent allow qemu_iovec_from_buffer() to specify offset from which to start copying consolidate qemu_iovec_memset{,_skip}() into single function and use existing iov_memset() rewrite iov_* functions change iov_* function prototypes to be more appropriate virtio-serial-bus: use correct lengths in control_out() message Conflicts: tests/Makefile Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-06-11consolidate qemu_iovec_copy() and qemu_iovec_concat() and make them consistentMichael Tokarev
qemu_iovec_concat() is currently a wrapper for qemu_iovec_copy(), use the former (with extra "0" arg) in a few places where it is used. Change skip argument of qemu_iovec_copy() from uint64_t to size_t, since size of qiov itself is size_t, so there's no way to skip larger sizes. Rename it to soffset, to make it clear that the offset is applied to src. Also change the only usage of uint64_t in hw/9pfs/virtio-9p.c, in v9fs_init_qiov_from_pdu() - all callers of it actually uses size_t too, not uint64_t. One added restriction: as for all other iovec-related functions, soffset must point inside src. Order of argumens is already good: qemu_iovec_memset(QEMUIOVector *qiov, size_t offset, int c, size_t bytes) vs: qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t soffset, size_t sbytes) (note soffset is after _src_ not dst, since it applies to src; for memset it applies to qiov). Note that in many places where this function is used, the previous call is qemu_iovec_reset(), which means many callers actually want copy (replacing dst content), not concat. So we may want to add a wrapper like qemu_iovec_copy() with the same arguments but which calls qemu_iovec_reset() before _concat(). Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2012-06-07build: move per-target hw/ objects to nested Makefile.objsPaolo Bonzini
This completes the move to nested Makefiles for virtio and a few other files that were not part of obj-TARGET-y, but still were compiled separately for each target. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-06-07build: convert libhw to nested Makefile.objsPaolo Bonzini
After this patch, the libhw* directories will have a hierarchy that mimics the source tree. This is useful because we do have a couple of files there that are in the top source directory. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-24hw/9pfs: Endian fixes for virtfsBenjamin Herrenschmidt
This patch fixes several endian bugs in virtfs. Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-02-15qom: Unify type registrationAndreas Färber
Replace device_init() with generalized type_init(). While at it, unify naming convention: type_init([$prefix_]register_types) Also, type_init() is a function, so add preceding blank line where necessary and don't put a semicolon after the closing brace. Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Anthony Liguori <anthony@codemonkey.ws> Cc: malc <av1474@comtv.ru> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-08Merge remote-tracking branch 'aneesh/for-upstream' into stagingAnthony Liguori
* aneesh/for-upstream: hw/9pfs: Remove O_NOATIME flag from 9pfs open() calls in readonly mode hw/9pfs: Update MAINTAINERS file fsdev: Fix parameter parsing for proxy helper hw/9pfs: Fix crash when mounting with synthfs hw/9pfs: Preserve S_ISGID hw/9pfs: Add new security model mapped-file.
2012-02-03qdev: register all types natively through QEMU Object ModelAnthony Liguori
This was done in a mostly automated fashion. I did it in three steps and then rebased it into a single step which avoids repeatedly touching every file in the tree. The first step was a sed-based addition of the parent type to the subclass registration functions. The second step was another sed-based removal of subclass registration functions while also adding virtual functions from the base class into a class_init function as appropriate. Finally, a python script was used to convert the DeviceInfo structures and qdev_register_subclass functions to TypeInfo structures, class_init functions, and type_register_static calls. We are almost fully converted to QOM after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-30hw/9pfs: Remove O_NOATIME flag from 9pfs open() calls in readonly modeDaniel P. Berrange
When 2c74c2cb4bedddbfa67628fbd5f9273b4e0e9903 added support for the 'readonly' flag against 9p filesystems, it also made QEMU add the O_NOATIME flag as a side-effect. The O_NOATIME flag, however, may only be set by the file owner, or a user with CAP_FOWNER capability. QEMU cannot assume that this is the case for filesytems exported to QEMU. eg, run QEMU as non-root, and attempt to pass the host OS filesystem through to the guest OS with readonly enable. The result is that the guest OS cannot open any files at all. If O_NOATIME is really required, it should be optionally enabled via a separate QEMU command line flag. * hw/9pfs/virtio-9p.c: Remove O_NOATIME Acked-by: M. Mohan Kumar <mohan@in.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-30hw/9pfs: Fix crash when mounting with synthfsAneesh Kumar K.V
Some Fsdriver backend don't have fs_root. So check for that in migrate message. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-30hw/9pfs: Preserve S_ISGIDM. Mohan Kumar
In passthrough security model in local fs driver, after a file creation chown and chmod are done to set the file credentials and mode as requested by 9p client. But if there was a request to create a file with S_ISGID bit, doing chown on that file resets the S_ISGID bit. So first call chown and then invoking chmod with proper mode bit retains the S_ISGID (if present/requested) This resulted in LTP mknod02, mknod03, mknod05, open10 test case failures. This patch fixes this issue. man 2 chown When the owner or group of an executable file are changed by an unprivileged user the S_ISUID and S_ISGID mode bits are cleared. POSIX does not specify whether this also should happen when root does the chown(); the Linux behavior depends on the kernel version. Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-27pci: convert to QEMU Object ModelAnthony Liguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27qdev: prepare source tree for code conversionAnthony Liguori
These are various small stylistic changes which help make things more consistent such that the automated conversion script can be simpler. It's not necessary to agree or disagree with these style changes because all of this code is going to be rewritten by the patch monkey script anyway. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-19hw/9pfs: Add new security model mapped-file.Aneesh Kumar K.V
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>
2012-01-06virtio-9p-proxy: Fix typo causing compile failure on 32 bit hostsPeter Maydell
Fix a compile failure on 32 bit hosts (integer constant is too large for 'unsigned long' type) by correcting a typo where the mask used for filling in the second f_fsid word had too many 'F's in it. Also drop the 'L' suffix that allowed this typo to go undetected on 64 bit hosts. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-04hw/9pfs: Add support to use named socket for proxy FSM. Mohan Kumar
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>
2012-01-04hw/9pfs: Proxy getversionM. Mohan Kumar
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>
2012-01-04hw/9pfs: xattr interfaces in proxy filesystem driverM. Mohan Kumar
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>
2012-01-04hw/9pfs: File ownership and othersM. Mohan Kumar
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>
2012-01-04hw/9pfs: Add stat/readlink/statfs for proxy FSM. Mohan Kumar
Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04hw/9pfs: Create other filesystem objectsM. Mohan Kumar
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>
2012-01-04hw/9pfs: Open and create filesM. Mohan Kumar
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>
2012-01-04hw/9pfs: File system helper process for qemu 9p proxy FSM. Mohan Kumar
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>
2012-01-04hw/9pfs: Add new proxy filesystem driverM. Mohan Kumar
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>
2012-01-04hw/9pfs: Add validation to {un}marshal codeM. Mohan Kumar
Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2012-01-04hw/9pfs: Move pdu_marshal/unmarshal code to a seperate fileM. Mohan Kumar
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>
2012-01-04hw/9pfs: Move opt validation to FsDriver callbackAneesh Kumar K.V
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>
2011-12-21hw/9pfs: iattr_valid flags are kernel internal flags map them to 9p values.Aneesh Kumar K.V
Kernel internal values can change, add protocol values for these constant and use them. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-12-21hw/9pfs: Use the correct signed type for different variablesAneesh Kumar K.V
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-12-21hw/9pfs: replace iovec manipulation with QEMUIOVectorStefan Hajnoczi
The v9fs_read() and v9fs_write() functions rely on iovec[] manipulation code should be replaced with QEMUIOVector to avoid duplicating code. In the future it may be possible to make the code even more concise by using QEMUIOVector consistently across virtio and 9pfs. The "v" format specifier for pdu_marshal() and pdu_unmarshal() is dropped since it does not actually pack/unpack anything. The specifier was also not implemented to update the offset variable and could only be used at the end of a format string, another sign that this shouldn't really be a format specifier. Instead, see the new v9fs_init_qiov_from_pdu() function. This change avoids a possible iovec[] buffer overflow when indirect vrings are used since the number of vectors is now limited by the underlying VirtQueueElement and cannot be out-of-bounds. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-12-06fix spelling in hw sub directoryDong Xu Wang
Correct obvious spelling errors in qemu/hw directory. Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-06fix typo: delete redundant semicolonDong Xu Wang
Double semicolons should be single. Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-04hw/9pfs: Use the correct file descriptor in Fsdriver CallbackAneesh Kumar K.V
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>
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