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[Xen-changelog] [xen master] tools: remove blktap2 source code

Date: Sat, 10 Sep 2016 03:00:33 +0000

Delivery-date: Sat, 10 Sep 2016 03:00:39 +0000

List-id: "Change log for Mercurial $receive only$" <xen-changelog.lists.xen.org>

commit 44b2829a8b97a8b04e063a93303dbe3a468642e3 Author: Wei Liu <wei.liu2@xxxxxxxxxx> AuthorDate: Mon Aug 15 12:05:44 2016 +0100 Commit: Wei Liu <wei.liu2@xxxxxxxxxx> CommitDate: Tue Sep 6 11:02:36 2016 +0100 tools: remove blktap2 source code Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx> Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx> --- tools/blktap2/Makefile | 20 - tools/blktap2/README | 321 --- tools/blktap2/control/Makefile | 80 - tools/blktap2/control/tap-ctl-allocate.c | 242 -- tools/blktap2/control/tap-ctl-attach.c | 61 - tools/blktap2/control/tap-ctl-check.c | 79 - tools/blktap2/control/tap-ctl-close.c | 87 - tools/blktap2/control/tap-ctl-create.c | 67 - tools/blktap2/control/tap-ctl-destroy.c | 56 - tools/blktap2/control/tap-ctl-detach.c | 61 - tools/blktap2/control/tap-ctl-free.c | 54 - tools/blktap2/control/tap-ctl-ipc.c | 249 --- tools/blktap2/control/tap-ctl-list.c | 536 ----- tools/blktap2/control/tap-ctl-major.c | 69 - tools/blktap2/control/tap-ctl-open.c | 75 - tools/blktap2/control/tap-ctl-pause.c | 59 - tools/blktap2/control/tap-ctl-spawn.c | 174 -- tools/blktap2/control/tap-ctl-unpause.c | 64 - tools/blktap2/control/tap-ctl.c | 815 ------- tools/blktap2/control/tap-ctl.h | 101 - tools/blktap2/drivers/Makefile | 113 - tools/blktap2/drivers/aes.c | 1319 ----------- tools/blktap2/drivers/aes.h | 28 - tools/blktap2/drivers/atomicio.c | 61 - tools/blktap2/drivers/blk.h | 36 - tools/blktap2/drivers/blk_linux.c | 43 - tools/blktap2/drivers/blk_netbsd.c | 41 - tools/blktap2/drivers/block-aio.c | 258 --- tools/blktap2/drivers/block-cache.c | 787 ------- tools/blktap2/drivers/block-log.c | 665 ------ tools/blktap2/drivers/block-qcow.c | 1501 ------------- tools/blktap2/drivers/block-ram.c | 256 --- tools/blktap2/drivers/block-remus.c | 1733 -------------- tools/blktap2/drivers/block-vhd.c | 2322 ------------------- tools/blktap2/drivers/bswap.h | 179 -- tools/blktap2/drivers/check_gcrypt | 18 - tools/blktap2/drivers/hashtable.c | 279 --- tools/blktap2/drivers/hashtable.h | 204 -- tools/blktap2/drivers/hashtable_itr.c | 195 -- tools/blktap2/drivers/hashtable_itr.h | 96 - tools/blktap2/drivers/hashtable_private.h | 90 - tools/blktap2/drivers/hashtable_utility.c | 71 - tools/blktap2/drivers/hashtable_utility.h | 55 - tools/blktap2/drivers/img2qcow.c | 316 --- tools/blktap2/drivers/io-optimize.c | 671 ------ tools/blktap2/drivers/io-optimize.h | 68 - tools/blktap2/drivers/libaio-compat.h | 102 - tools/blktap2/drivers/lock.c | 1000 --------- tools/blktap2/drivers/lock.h | 51 - tools/blktap2/drivers/log.h | 123 - tools/blktap2/drivers/md5.c | 278 --- tools/blktap2/drivers/md5.h | 15 - tools/blktap2/drivers/profile.h | 191 -- tools/blktap2/drivers/qcow-create.c | 121 - tools/blktap2/drivers/qcow.h | 131 -- tools/blktap2/drivers/qcow2raw.c | 443 ---- tools/blktap2/drivers/scheduler.c | 265 --- tools/blktap2/drivers/scheduler.h | 65 - tools/blktap2/drivers/tapdisk-client.c | 496 ----- tools/blktap2/drivers/tapdisk-control.c | 837 ------- tools/blktap2/drivers/tapdisk-control.h | 35 - tools/blktap2/drivers/tapdisk-diff.c | 802 ------- tools/blktap2/drivers/tapdisk-disktype.c | 200 -- tools/blktap2/drivers/tapdisk-disktype.h | 62 - tools/blktap2/drivers/tapdisk-driver.c | 101 - tools/blktap2/drivers/tapdisk-driver.h | 62 - tools/blktap2/drivers/tapdisk-filter.c | 272 --- tools/blktap2/drivers/tapdisk-filter.h | 67 - tools/blktap2/drivers/tapdisk-image.c | 169 -- tools/blktap2/drivers/tapdisk-image.h | 56 - tools/blktap2/drivers/tapdisk-interface.c | 259 --- tools/blktap2/drivers/tapdisk-interface.h | 54 - tools/blktap2/drivers/tapdisk-log.c | 257 --- tools/blktap2/drivers/tapdisk-log.h | 51 - tools/blktap2/drivers/tapdisk-queue.c | 743 ------ tools/blktap2/drivers/tapdisk-queue.h | 125 -- tools/blktap2/drivers/tapdisk-ring.c | 439 ---- tools/blktap2/drivers/tapdisk-ring.h | 87 - tools/blktap2/drivers/tapdisk-server.c | 345 --- tools/blktap2/drivers/tapdisk-server.h | 67 - tools/blktap2/drivers/tapdisk-stream.c | 605 ----- tools/blktap2/drivers/tapdisk-utils.c | 214 -- tools/blktap2/drivers/tapdisk-utils.h | 45 - tools/blktap2/drivers/tapdisk-vbd.c | 1723 -------------- tools/blktap2/drivers/tapdisk-vbd.h | 207 -- tools/blktap2/drivers/tapdisk.h | 169 -- tools/blktap2/drivers/tapdisk2.c | 138 -- tools/blktap2/drivers/td.c | 691 ------ tools/blktap2/drivers/xmsnap | 78 - tools/blktap2/include/Makefile | 17 - tools/blktap2/include/atomicio.h | 33 - tools/blktap2/include/blktap2.h | 67 - tools/blktap2/include/blktaplib.h | 242 -- tools/blktap2/include/libvhd-journal.h | 68 - tools/blktap2/include/libvhd.h | 326 --- tools/blktap2/include/list.h | 125 -- tools/blktap2/include/lvm-util.h | 71 - tools/blktap2/include/relative-path.h | 43 - tools/blktap2/include/tapdisk-message.h | 203 -- tools/blktap2/include/vhd-util.h | 44 - tools/blktap2/include/vhd-uuid.h | 63 - tools/blktap2/include/vhd.h | 219 -- tools/blktap2/lvm/Makefile | 36 - tools/blktap2/lvm/lvm-util.c | 349 --- tools/blktap2/vhd/Makefile | 51 - tools/blktap2/vhd/lib/Makefile | 82 - tools/blktap2/vhd/lib/atomicio.c | 61 - tools/blktap2/vhd/lib/libvhd-journal.c | 1534 ------------- tools/blktap2/vhd/lib/libvhd.c | 3348 ---------------------------- tools/blktap2/vhd/lib/relative-path.c | 299 --- tools/blktap2/vhd/lib/vhd-util-check.c | 980 -------- tools/blktap2/vhd/lib/vhd-util-coalesce.c | 218 -- tools/blktap2/vhd/lib/vhd-util-create.c | 80 - tools/blktap2/vhd/lib/vhd-util-fill.c | 105 - tools/blktap2/vhd/lib/vhd-util-modify.c | 132 -- tools/blktap2/vhd/lib/vhd-util-query.c | 159 -- tools/blktap2/vhd/lib/vhd-util-read.c | 742 ------ tools/blktap2/vhd/lib/vhd-util-repair.c | 84 - tools/blktap2/vhd/lib/vhd-util-resize.c | 1131 ---------- tools/blktap2/vhd/lib/vhd-util-revert.c | 106 - tools/blktap2/vhd/lib/vhd-util-scan.c | 1317 ----------- tools/blktap2/vhd/lib/vhd-util-set-field.c | 106 - tools/blktap2/vhd/lib/vhd-util-snapshot.c | 216 -- tools/blktap2/vhd/lib/vhd-util-uuid.c | 128 -- tools/blktap2/vhd/vhd-update.c | 259 --- tools/blktap2/vhd/vhd-util.c | 163 -- 126 files changed, 40123 deletions(-) diff --git a/tools/blktap2/Makefile b/tools/blktap2/Makefile deleted file mode 100644 index 94200dc..0000000 --- a/tools/blktap2/Makefile +++ /dev/null @@ -1,20 +0,0 @@ -XEN_ROOT = $(CURDIR)/../.. -include $(XEN_ROOT)/tools/Rules.mk - -CFLAGS += $(CFLAGS_libxenctrl) -LDLIBS += $(LDLIBS_libxenctrl) - -SUBDIRS-y := -SUBDIRS-y += include -SUBDIRS-y += lvm -SUBDIRS-y += vhd -SUBDIRS-$(CONFIG_Linux) += drivers -SUBDIRS-$(CONFIG_Linux) += control - -clean: - rm -rf *.a *.so *.o *.rpm $(LIB) *~ $(DEPS) TAGS - -distclean: clean - -.PHONY: all clean install distclean -all clean install distclean: %: subdirs-% diff --git a/tools/blktap2/README b/tools/blktap2/README deleted file mode 100644 index 75fc614..0000000 --- a/tools/blktap2/README +++ /dev/null @@ -1,321 +0,0 @@ -Blktap2 Userspace Tools + Library -================================ - -Dutch Meyer -4th June 2009 - -Andrew Warfield and Julian Chesterfield -16th June 2006 - - -The blktap2 userspace toolkit provides a user-level disk I/O -interface. The blktap2 mechanism involves a kernel driver that acts -similarly to the existing Xen/Linux blkback driver, and a set of -associated user-level libraries. Using these tools, blktap2 allows -virtual block devices presented to VMs to be implemented in userspace -and to be backed by raw partitions, files, network, etc. - -The key benefit of blktap2 is that it makes it easy and fast to write -arbitrary block backends, and that these user-level backends actually -perform very well. Specifically: - -- Metadata disk formats such as Copy-on-Write, encrypted disks, sparse - formats and other compression features can be easily implemented. - -- Accessing file-based images from userspace avoids problems related - to flushing dirty pages which are present in the Linux loopback - driver. (Specifically, doing a large number of writes to an - NFS-backed image don't result in the OOM killer going berserk.) - -- Per-disk handler processes enable easier userspace policing of block - resources, and process-granularity QoS techniques (disk scheduling - and related tools) may be trivially applied to block devices. - -- It's very easy to take advantage of userspace facilities such as - networking libraries, compression utilities, peer-to-peer - file-sharing systems and so on to build more complex block backends. - -- Crashes are contained -- incremental development/debugging is very - fast. - -How it works (in one paragraph): - -Working in conjunction with the kernel blktap2 driver, all disk I/O -requests from VMs are passed to the userspace deamon (using a shared -memory interface) through a character device. Each active disk is -mapped to an individual device node, allowing per-disk processes to -implement individual block devices where desired. The userspace -drivers are implemented using asynchronous (Linux libaio), -O_DIRECT-based calls to preserve the unbuffered, batched and -asynchronous request dispatch achieved with the existing blkback -code. We provide a simple, asynchronous virtual disk interface that -makes it quite easy to add new disk implementations. - -As of June 2009 the current supported disk formats are: - - - Raw Images (both on partitions and in image files) - - Fast sharable RAM disk between VMs (requires some form of - cluster-based filesystem support e.g. OCFS2 in the guest kernel) - - VHD, including snapshots and sparse images - - Qcow, including snapshots and sparse images - - -Build and Installation Instructions -=================================== - -Make to configure the blktap2 backend driver in your dom0 kernel. It -will inter-operate with the existing backend and frontend drivers. It -will also cohabitate with the original blktap driver. However, some -formats (currently aio and qcow) will default to their blktap2 -versions when specified in a vm configuration file. - -To build the tools separately, "make && make install" in -tools/blktap2. - - -Using the Tools -=============== - -Preparing an image for boot: - -The userspace disk agent is configured to start automatically via xend - -Customize the VM config file to use the 'tap:tapdisk' handler, -followed by the driver type. e.g. for a raw image such as a file or -partition: - -disk = ['tap:tapdisk:aio:<FILENAME>,sda1,w'] - -Alternatively, the vhd-util tool (installed with make install, or in -/blktap2/vhd) can be used to build sparse copy-on-write vhd images. - -For example, to build a sparse image - - vhd-util create -n MyVHDFile -s 1024 - -This creates a sparse 1GB file named "MyVHDFile" that can be mounted -and populated with data. - -One can also base the image on a raw file - - vhd-util snapshot -n MyVHDFile -p SomeRawFile -m - -This creates a sparse VHD file named "MyVHDFile" using "SomeRawFile" -as a parent image. Copy-on-write semantics ensure that writes will be -stored in "MyVHDFile" while reads will be directed to the most -recently written version of the data, either in "MyVHDFile" or -"SomeRawFile" as is appropriate. Other options exist as well, consult -the vhd-util application for the complete set of VHD tools. - -VHD files can be mounted automatically in a guest similarly to the -above AIO example simply by specifying the vhd driver. - -disk = ['tap:tapdisk:vhd:<VHD FILENAME>,sda1,w'] - - -Snapshots: - -Pausing a guest will also plug the corresponding IO queue for blktap2 -devices and stop blktap2 drivers. This can be used to implement a -safe live snapshot of qcow and vhd disks. An example script "xmsnap" -is shown in the tools/blktap2/drivers directory. This script will -perform a live snapshot of a qcow disk. VHD files can use the -"vhd-util snapshot" tool discussed above. If this snapshot command is -applied to a raw file mounted with tap:tapdisk:AIO, include the -m -flag and the driver will be reloaded as VHD. If applied to an already -mounted VHD file, omit the -m flag. - - -Mounting images in Dom0 using the blktap2 driver -=============================================== -Tap (and blkback) disks are also mountable in Dom0 without requiring an -active VM to attach. - -The syntax is - - tapdisk2 -n <type>:<full path to file> - -For example - - tapdisk2 -n aio:/home/images/rawFile.img - -When successful the location of the new device will be provided by -tapdisk2 to stdout and tapdisk2 will terminate. From that point -forward control of the device is provided through sysfs in the -directory- - - /sys/class/blktap2/blktap#/ - -Where # is a blktap2 device number present in the path that tapdisk2 -printed before terminating. The sysfs interface is largely intuitive, -for example, to remove tap device 0 one would- - - echo 1 > /sys/class/blktap2/blktap0/remove - -Similarly, a pause control is available, which is can be used to plug -the request queue of a live running guest. - -Previous versions of blktap mounted devices in dom0 by using blkfront -in dom0 and the xm block-attach command. This approach is still -available, though slightly more cumbersome. - - -Tapdisk Development -=============================================== - -People regularly ask how to develop their own tapdisk drivers, and -while it has not yet been well documented, the process is relatively -easy. Here I will provide a brief overview. The best reference, of -course, comes from the existing drivers. Specifically, -blktap2/drivers/block-ram.c and blktap2/drivers/block-aio.c provide -the clearest examples of simple drivers. - - -Setup: - -First you need to register your new driver with blktap. This is done -in disktypes.h. There are five things that you must do. To -demonstrate, I will create a disk called "mynewdisk", you can name -yours freely. - -1) Forward declare an instance of struct tap_disk. - -e.g. - - extern struct tap_disk tapdisk_mynewdisk; - -2) Claim one of the unused disk type numbers, take care to observe the -MAX_DISK_TYPES macro, increasing the number if necessary. - -e.g. - - #define DISK_TYPE_MYNEWDISK 10 - -3) Create an instance of disk_info_t. The bulk of this file contains examples of these. - -e.g. - - static disk_info_t mynewdisk_disk = { - DISK_TYPE_MYNEWDISK, - "My New Disk (mynewdisk)", - "mynewdisk", - 0, - #ifdef TAPDISK - &tapdisk_mynewdisk, - #endif - }; - -A few words about what these mean. The first field must be the disk -type number you claimed in step (2). The second field is a string -describing your disk, and may contain any relevant info. The third -field is the name of your disk as will be used by the tapdisk2 utility -and xend (for example tapdisk2 -n mynewdisk:/path/to/disk.image, or in -your xm create config file). The forth is binary and determines -whether you will have one instance of your driver, or many. Here, a 1 -means that your driver is a singleton and will coordinate access to -any number of tap devices. 0 is more common, meaning that you will -have one driver for each device that is created. The final field -should contain a reference to the struct tap_disk you created in step -(1). - -4) Add a reference to your disk info structure (from step (3)) to the -dtypes array. Take care here - you need to place it in the position -corresponding to the device type number you claimed in step (2). So -we would place &mynewdisk_disk in dtypes[10]. Look at the other -devices in this array and pad with "&null_disk," as necessary. - -5) Modify the xend python scripts. You need to add your disk name to -the list of disks that xend recognizes. - -edit: - tools/python/xen/xend/server/BlktapController.py - -And add your disk to the "blktap_disk_types" array near the top of -your file. Use the same name you specified in the third field of step -(3). The order of this list is not important. - - -Now your driver is ready to be written. Create a block-mynewdisk.c in -tools/blktap2/drivers and add it to the Makefile. - - -Development: - -Copying block-aio.c and block-ram.c would be a good place to start. -Read those files as you go through this, I will be assisting by -commenting on a few useful functions and structures. - -struct tap_disk: - -Remember the forward declaration in step (1) of the setup phase above? -Now is the time to make that structure a reality. This structure -contains a list of function pointers for all the routines that will be -asked of your driver. Currently the required functions are open, -close, read, write, get_parent_id, validate_parent, and debug. - -e.g. - - struct tap_disk tapdisk_mynewdisk = { - .disk_type = "tapdisk_mynewdisk", - .flags = 0, - .private_data_size = sizeof(struct tdmynewdisk_state), - .td_open = tdmynewdisk_open, - .... - -The private_data_size field is used to provide a structure to store -the state of your device. It is very likely that you will want -something here, but you are free to design whatever structure you -want. Blktap will allocate this space for you, you just need to tell -it how much space you want. - - -tdmynewdisk_open: - -This is the open routine. The first argument is a structure -representing your driver. Two fields in this array are -interesting. - -driver->data will contain a block of memory of the size your requested -in in the .private_data_size field of your struct tap_disk (above). - -driver->info contains a structure that details information about your -disk. You need to fill this out. By convention this is done with a -_get_image_info() function. Assign a size (the total number of -sectors), sector_size (the size of each sector in bytes, and set -driver->info->info to 0. - -The second parameter contains the name that was specified in the -creation of your device, either through xend, or on the command line -with tapdisk2. Usually this specifies a file that you will open in -this routine. The final parameter, flags, contains one of a number of -flags specified in tapdisk.h that may change the way you treat the -disk. - - -_queue_read/write: - -These are your read and write operations. What you do here will -depend on your disk, but you should do exactly one of- - -1) call td_complete_request with either error or success code. - -2) Call td_forward_request, which will forward the request to the next -driver in the stack. - -3) Queue the request for asynchronous processing with -td_prep_read/write. In doing so, you will also register a callback -for request completion. When the request completes you must do one of -options (1) or (2) above. Finally, call td_queue_tiocb to submit the -request to a wait queue. - -The above functions are defined in tapdisk-interface.c. If you don't -use them as specified you will run into problems as your driver will -fail to inform blktap of the state of requests that have been -submitted. Blktap keeps track of all requests and does not like losing track. - - -_close, _get_parent_id, _validate_parent: - -These last few tend to be very routine. _close is called when the -device is closed, and also when it is paused (in this case, open will -also be called later). The other functions are used in stacking -drivers. Most often drivers will return TD_NO_PARENT and -EINVAL, -respectively. - - - - - - diff --git a/tools/blktap2/control/Makefile b/tools/blktap2/control/Makefile deleted file mode 100644 index 767f52a..0000000 --- a/tools/blktap2/control/Makefile +++ /dev/null @@ -1,80 +0,0 @@ -XEN_ROOT := $(CURDIR)/../../../ -include $(XEN_ROOT)/tools/Rules.mk - -MAJOR = 1.0 -MINOR = 0 -LIBNAME = libblktapctl -LIBSONAME = $(LIBNAME).so.$(MAJOR) - -IBIN = tap-ctl - -CFLAGS += -Werror -CFLAGS += -Wno-unused -CFLAGS += -I../include -I../drivers -CFLAGS += $(CFLAGS_xeninclude) -CFLAGS += $(CFLAGS_libxenctrl) -CFLAGS += -D_GNU_SOURCE -CFLAGS += -DTAPCTL - -CTL_OBJS := tap-ctl-ipc.o -CTL_OBJS += tap-ctl-list.o -CTL_OBJS += tap-ctl-allocate.o -CTL_OBJS += tap-ctl-free.o -CTL_OBJS += tap-ctl-create.o -CTL_OBJS += tap-ctl-destroy.o -CTL_OBJS += tap-ctl-spawn.o -CTL_OBJS += tap-ctl-attach.o -CTL_OBJS += tap-ctl-detach.o -CTL_OBJS += tap-ctl-open.o -CTL_OBJS += tap-ctl-close.o -CTL_OBJS += tap-ctl-pause.o -CTL_OBJS += tap-ctl-unpause.o -CTL_OBJS += tap-ctl-major.o -CTL_OBJS += tap-ctl-check.o - -CTL_PICS = $(patsubst %.o,%.opic,$(CTL_OBJS)) - -OBJS = $(CTL_OBJS) tap-ctl.o -PICS = $(CTL_PICS) - -LIB_STATIC = $(LIBNAME).a -LIB_SHARED = $(LIBSONAME).$(MINOR) -IBIN = tap-ctl - -all: build - -build: $(IBIN) $(LIB_STATIC) $(LIB_SHARED) - -$(LIBNAME).so: $(LIBSONAME) - ln -sf $< $@ - -$(LIBSONAME): $(LIB_SHARED) - ln -sf $< $@ - -tap-ctl: tap-ctl.o $(LIBNAME).so - $(CC) $(LDFLAGS) -o $@ $^ $(APPEND_LDFLAGS) - -$(LIB_STATIC): $(CTL_OBJS) - $(AR) r $@ $^ - -$(LIB_SHARED): $(CTL_PICS) - $(CC) $(LDFLAGS) -fPIC -Wl,$(SONAME_LDFLAG) -Wl,$(LIBSONAME) $(SHLIB_LDFLAGS) -rdynamic $^ -o $@ $(APPEND_LDFLAGS) - -install: $(IBIN) $(LIB_STATIC) $(LIB_SHARED) - $(INSTALL_DIR) -p $(DESTDIR)$(sbindir) - $(INSTALL_PROG) $(IBIN) $(DESTDIR)$(sbindir) - $(INSTALL_DATA) $(LIB_STATIC) $(DESTDIR)$(libdir) - $(INSTALL_PROG) $(LIB_SHARED) $(DESTDIR)$(libdir) - ln -sf $(LIBSONAME) $(DESTDIR)$(libdir)/$(LIBNAME).so - ln -sf $(LIB_SHARED) $(DESTDIR)$(libdir)/$(LIBSONAME) - -clean: - rm -f $(OBJS) $(PICS) $(DEPS) $(IBIN) $(LIB_STATIC) $(LIB_SHARED) - rm -f $(LIBNAME).so $(LIBSONAME) - rm -f *~ - -distclean: clean - -.PHONY: all build clean distclean install - --include $(DEPS) diff --git a/tools/blktap2/control/tap-ctl-allocate.c b/tools/blktap2/control/tap-ctl-allocate.c deleted file mode 100644 index 8a6471e..0000000 --- a/tools/blktap2/control/tap-ctl-allocate.c +++ /dev/null @@ -1,242 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <fcntl.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <getopt.h> -#include <libgen.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/ioctl.h> -#include <linux/major.h> - -#include "tap-ctl.h" -#include "blktap2.h" - -static int -tap_ctl_prepare_directory(const char *dir) -{ - int err; - char *ptr, *name, *start; - - err = access(dir, W_OK | R_OK); - if (!err) - return 0; - - name = strdup(dir); - if (!name) - return ENOMEM; - - start = name; - - for (;;) { - ptr = strchr(start + 1, '/'); - if (ptr) - *ptr = '\0'; - - err = mkdir(name, 0755); - if (err && errno != EEXIST) { - PERROR("mkdir %s", name); - err = errno; - break; - } - - if (!ptr) - break; - else { - *ptr = '/'; - start = ptr + 1; - } - } - - free(name); - return err; -} - -static int -tap_ctl_make_device(const char *devname, const int major, - const int minor, const int perm) -{ - int err; - char *copy, *dir; - - copy = strdup(devname); - if (!copy) - return ENOMEM; - - dir = dirname(copy); - - err = tap_ctl_prepare_directory(dir); - free(copy); - - if (err) - return err; - - if (!access(devname, F_OK)) - if (unlink(devname)) { - PERROR("unlink %s", devname); - return errno; - } - - err = mknod(devname, perm, makedev(major, minor)); - if (err) { - PERROR("mknod %s", devname); - return errno; - } - - return 0; -} - -static int -tap_ctl_check_environment(void) -{ - FILE *f; - int err, minor; - char name[256]; - - err = tap_ctl_prepare_directory(BLKTAP2_CONTROL_DIR); - if (err) - return err; - - if (!access(BLKTAP2_CONTROL_DEVICE, R_OK | W_OK)) - return 0; - - memset(name, 0, sizeof(name)); - - f = fopen("/proc/misc", "r"); - if (!f) { - EPRINTF("failed to open /proc/misc: %d\n", errno); - return errno; - } - - while (fscanf(f, "%d %256s", &minor, name) == 2) - if (!strcmp(name, BLKTAP2_CONTROL_NAME)) { - err = tap_ctl_make_device(BLKTAP2_CONTROL_DEVICE, - MISC_MAJOR, - minor, S_IFCHR | 0600); - goto out; - } - - err = ENOSYS; - EPRINTF("didn't find %s in /proc/misc\n", BLKTAP2_CONTROL_NAME); - -out: - fclose(f); - return err; -} - -static int -tap_ctl_allocate_device(int *minor, char **devname) -{ - char *name; - int fd, err; - struct blktap2_handle handle; - - *minor = -1; - if (!devname) - return EINVAL; - - fd = open(BLKTAP2_CONTROL_DEVICE, O_RDONLY); - if (fd == -1) { - EPRINTF("failed to open control device: %d\n", errno); - return errno; - } - - err = ioctl(fd, BLKTAP2_IOCTL_ALLOC_TAP, &handle); - close(fd); - if (err == -1) { - EPRINTF("failed to allocate new device: %d\n", errno); - return errno; - } - - err = asprintf(&name, "%s%d", BLKTAP2_RING_DEVICE, handle.minor); - if (err == -1) { - err = ENOMEM; - goto fail; - } - - err = tap_ctl_make_device(name, handle.ring, - handle.minor, S_IFCHR | 0600); - free(name); - if (err) { - EPRINTF("creating ring device for %d failed: %d\n", - handle.minor, err); - goto fail; - } - - if (*devname) - name = *devname; - else { - err = asprintf(&name, "%s%d", - BLKTAP2_IO_DEVICE, handle.minor); - if (err == -1) { - err = ENOMEM; - goto fail; - } - *devname = name; - } - - err = tap_ctl_make_device(name, handle.device, - handle.minor, S_IFBLK | 0600); - if (err) { - EPRINTF("creating IO device for %d failed: %d\n", - handle.minor, err); - goto fail; - } - - DBG("new interface: ring: %u, device: %u, minor: %u\n", - handle.ring, handle.device, handle.minor); - - *minor = handle.minor; - return 0; - -fail: - tap_ctl_free(handle.minor); - return err; -} - -int -tap_ctl_allocate(int *minor, char **devname) -{ - int err; - - *minor = -1; - - err = tap_ctl_check_environment(); - if (err) - return err; - - err = tap_ctl_allocate_device(minor, devname); - if (err) - return err; - - return 0; -} diff --git a/tools/blktap2/control/tap-ctl-attach.c b/tools/blktap2/control/tap-ctl-attach.c deleted file mode 100644 index 3cb933c..0000000 --- a/tools/blktap2/control/tap-ctl-attach.c +++ /dev/null @@ -1,61 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <getopt.h> - -#include "tap-ctl.h" - -int -tap_ctl_attach(const int id, const int minor) -{ - int err; - tapdisk_message_t message; - - memset(&message, 0, sizeof(message)); - message.type = TAPDISK_MESSAGE_ATTACH; - message.cookie = minor; - - err = tap_ctl_connect_send_and_receive(id, &message, 5); - if (err) - return err; - - if (message.type == TAPDISK_MESSAGE_ATTACH_RSP) { - err = message.u.response.error; - if (err) - EPRINTF("attach failed: %d\n", err); - } else { - EPRINTF("got unexpected result '%s' from %d\n", - tapdisk_message_name(message.type), id); - err = EINVAL; - } - - return err; -} diff --git a/tools/blktap2/control/tap-ctl-check.c b/tools/blktap2/control/tap-ctl-check.c deleted file mode 100644 index e98583a..0000000 --- a/tools/blktap2/control/tap-ctl-check.c +++ /dev/null @@ -1,79 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <unistd.h> -#include <string.h> - -#include "tap-ctl.h" -#include "blktap2.h" - -int -tap_ctl_check_blktap(const char **msg) -{ - FILE *f; - int err = 0, minor; - char name[32]; - - memset(name, 0, sizeof(name)); - - f = fopen("/proc/misc", "r"); - if (!f) { - *msg = "failed to open /proc/misc"; - return -errno; - } - - while (fscanf(f, "%d %32s", &minor, name) == 2) { - if (!strcmp(name, BLKTAP2_CONTROL_NAME)) - goto out; - } - - err = -ENOSYS; - *msg = "blktap kernel module not installed"; - -out: - fclose(f); - return err; -} - -int -tap_ctl_check(const char **msg) -{ - int err; - uid_t uid; - - err = tap_ctl_check_blktap(msg); - if (err) - goto out; - - err = 0; - *msg = "ok"; - -out: - return err; -} diff --git a/tools/blktap2/control/tap-ctl-close.c b/tools/blktap2/control/tap-ctl-close.c deleted file mode 100644 index 2e5f80b..0000000 --- a/tools/blktap2/control/tap-ctl-close.c +++ /dev/null @@ -1,87 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <getopt.h> - -#include "tap-ctl.h" - -static int -__tap_ctl_close(const int id, const int minor, const int force) -{ - int err; - tapdisk_message_t message; - - memset(&message, 0, sizeof(message)); - message.type = TAPDISK_MESSAGE_CLOSE; - if (force) - message.type = TAPDISK_MESSAGE_FORCE_SHUTDOWN; - message.cookie = minor; - - err = tap_ctl_connect_send_and_receive(id, &message, 5); - if (err) - return err; - - if (message.type == TAPDISK_MESSAGE_CLOSE_RSP) { - err = message.u.response.error; - if (err) - EPRINTF("close failed: %d\n", err); - } else { - EPRINTF("got unexpected result '%s' from %d\n", - tapdisk_message_name(message.type), id); - err = EINVAL; - } - - return err; -} - -int -tap_ctl_close(const int id, const int minor, const int force) -{ - int i, err; - - for (i = 0; i < 20; i++) { - err = __tap_ctl_close(id, minor, force); - if (!err) - return 0; - - err = (err < 0 ? -err : err); - if (err != EAGAIN) { - EPRINTF("close failed: %d\n", err); - return err; - } - - usleep(1000); - } - - EPRINTF("close timed out\n"); - return EIO; -} diff --git a/tools/blktap2/control/tap-ctl-create.c b/tools/blktap2/control/tap-ctl-create.c deleted file mode 100644 index f4c47f1..0000000 --- a/tools/blktap2/control/tap-ctl-create.c +++ /dev/null @@ -1,67 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <unistd.h> -#include <getopt.h> - -#include "tap-ctl.h" -#include "blktap2.h" - -int -tap_ctl_create(const char *params, char **devname) -{ - int err, id, minor; - - err = tap_ctl_allocate(&minor, devname); - if (err) - return err; - - id = tap_ctl_spawn(); - if (id < 0) { - err = id; - goto destroy; - } - - err = tap_ctl_attach(id, minor); - if (err) - goto destroy; - - err = tap_ctl_open(id, minor, params); - if (err) - goto detach; - - return 0; - -detach: - tap_ctl_detach(id, minor); -destroy: - tap_ctl_free(minor); - return err; -} diff --git a/tools/blktap2/control/tap-ctl-destroy.c b/tools/blktap2/control/tap-ctl-destroy.c deleted file mode 100644 index dc5dbaa..0000000 --- a/tools/blktap2/control/tap-ctl-destroy.c +++ /dev/null @@ -1,56 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <fcntl.h> -#include <stdlib.h> -#include <unistd.h> -#include <getopt.h> - -#include "tap-ctl.h" -#include "blktap2.h" - -int -tap_ctl_destroy(const int id, const int minor) -{ - int err; - - err = tap_ctl_close(id, minor, 0); - if (err) - return err; - - err = tap_ctl_detach(id, minor); - if (err) - return err; - - err = tap_ctl_free(minor); - if (err) - return err; - - return 0; -} diff --git a/tools/blktap2/control/tap-ctl-detach.c b/tools/blktap2/control/tap-ctl-detach.c deleted file mode 100644 index 7d7bbf3..0000000 --- a/tools/blktap2/control/tap-ctl-detach.c +++ /dev/null @@ -1,61 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <getopt.h> - -#include "tap-ctl.h" - -int -tap_ctl_detach(const int id, const int minor) -{ - int err; - tapdisk_message_t message; - - memset(&message, 0, sizeof(message)); - message.type = TAPDISK_MESSAGE_DETACH; - message.cookie = minor; - - err = tap_ctl_connect_send_and_receive(id, &message, 5); - if (err) - return err; - - if (message.type == TAPDISK_MESSAGE_DETACH_RSP) { - err = message.u.response.error; - if (err < 0) - printf("detach failed: %d\n", err); - } else { - printf("got unexpected result '%s' from %d\n", - tapdisk_message_name(message.type), id); - err = EINVAL; - } - - return err; -} diff --git a/tools/blktap2/control/tap-ctl-free.c b/tools/blktap2/control/tap-ctl-free.c deleted file mode 100644 index 9ae7295..0000000 --- a/tools/blktap2/control/tap-ctl-free.c +++ /dev/null @@ -1,54 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <fcntl.h> -#include <stdlib.h> -#include <unistd.h> -#include <getopt.h> -#include <sys/ioctl.h> - -#include "tap-ctl.h" -#include "blktap2.h" - -int -tap_ctl_free(const int minor) -{ - int fd, err; - - fd = open(BLKTAP2_CONTROL_DEVICE, O_RDONLY); - if (fd == -1) { - EPRINTF("failed to open control device: %d\n", errno); - return errno; - } - - err = ioctl(fd, BLKTAP2_IOCTL_FREE_TAP, minor); - close(fd); - - return err; -} diff --git a/tools/blktap2/control/tap-ctl-ipc.c b/tools/blktap2/control/tap-ctl-ipc.c deleted file mode 100644 index c7e42d9..0000000 --- a/tools/blktap2/control/tap-ctl-ipc.c +++ /dev/null @@ -1,249 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <sys/un.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/socket.h> - -#include "tap-ctl.h" -#include "blktap2.h" - -int tap_ctl_debug = 0; - -int -tap_ctl_read_message(int fd, tapdisk_message_t *message, int timeout) -{ - fd_set readfds; - int ret, len, offset; - struct timeval tv, *t; - - t = NULL; - offset = 0; - len = sizeof(tapdisk_message_t); - - if (timeout) { - tv.tv_sec = timeout; - tv.tv_usec = 0; - t = &tv; - } - - memset(message, 0, sizeof(tapdisk_message_t)); - - while (offset < len) { - FD_ZERO(&readfds); - FD_SET(fd, &readfds); - - ret = select(fd + 1, &readfds, NULL, NULL, t); - if (ret == -1) { - if (errno == EINTR) - continue; - break; - } - else if (FD_ISSET(fd, &readfds)) { - ret = read(fd, message + offset, len - offset); - if (ret <= 0) { - if (errno == EINTR) - continue; - break; - } - offset += ret; - } else - break; - } - - if (offset != len) { - EPRINTF("failure reading message\n"); - return -EIO; - } - - DBG("received '%s' message (uuid = %u)\n", - tapdisk_message_name(message->type), message->cookie); - - return 0; -} - -int -tap_ctl_write_message(int fd, tapdisk_message_t *message, int timeout) -{ - fd_set writefds; - int ret, len, offset; - struct timeval tv, *t; - - t = NULL; - offset = 0; - len = sizeof(tapdisk_message_t); - - if (timeout) { - tv.tv_sec = timeout; - tv.tv_usec = 0; - t = &tv; - } - - DBG("sending '%s' message (uuid = %u)\n", - tapdisk_message_name(message->type), message->cookie); - - while (offset < len) { - FD_ZERO(&writefds); - FD_SET(fd, &writefds); - - /* we don't bother reinitializing tv. at worst, it will wait a - * bit more time than expected. */ - - ret = select(fd + 1, NULL, &writefds, NULL, t); - if (ret == -1) { - if (errno == EINTR) - continue; - break; - } - else if (FD_ISSET(fd, &writefds)) { - ret = write(fd, message + offset, len - offset); - if (ret <= 0) { - if (errno == EINTR) - continue; - break; - } - offset += ret; - } else - break; - } - - if (offset != len) { - EPRINTF("failure writing message\n"); - return -EIO; - } - - return 0; -} - -int -tap_ctl_send_and_receive(int sfd, tapdisk_message_t *message, int timeout) -{ - int err; - - err = tap_ctl_write_message(sfd, message, timeout); - if (err) { - EPRINTF("failed to send '%s' message\n", - tapdisk_message_name(message->type)); - return err; - } - - err = tap_ctl_read_message(sfd, message, timeout); - if (err) { - EPRINTF("failed to receive '%s' message\n", - tapdisk_message_name(message->type)); - return err; - } - - return 0; -} - -char * -tap_ctl_socket_name(int id) -{ - char *name; - - if (asprintf(&name, "%s/%s%d", - BLKTAP2_CONTROL_DIR, BLKTAP2_CONTROL_SOCKET, id) == -1) - return NULL; - - return name; -} - -int -tap_ctl_connect(const char *name, int *sfd) -{ - int fd, err; - struct sockaddr_un saddr; - - *sfd = -1; - - fd = socket(AF_UNIX, SOCK_STREAM, 0); - if (fd == -1) { - EPRINTF("couldn't create socket for %s: %d\n", name, errno); - return -errno; - } - - memset(&saddr, 0, sizeof(saddr)); - saddr.sun_family = AF_UNIX; - strcpy(saddr.sun_path, name); - - err = connect(fd, (const struct sockaddr *)&saddr, sizeof(saddr)); - if (err) { - EPRINTF("couldn't connect to %s: %d\n", name, errno); - close(fd); - return -errno; - } - - *sfd = fd; - return 0; -} - -int -tap_ctl_connect_id(int id, int *sfd) -{ - int err; - char *name; - - *sfd = -1; - - if (id < 0) { - EPRINTF("invalid id %d\n", id); - return -EINVAL; - } - - name = tap_ctl_socket_name(id); - if (!name) { - EPRINTF("couldn't name socket for %d\n", id); - return -ENOMEM; - } - - err = tap_ctl_connect(name, sfd); - free(name); - - return err; -} - -int -tap_ctl_connect_send_and_receive(int id, tapdisk_message_t *message, int timeout) -{ - int err, sfd; - - err = tap_ctl_connect_id(id, &sfd); - if (err) - return err; - - err = tap_ctl_send_and_receive(sfd, message, timeout); - - close(sfd); - return err; -} diff --git a/tools/blktap2/control/tap-ctl-list.c b/tools/blktap2/control/tap-ctl-list.c deleted file mode 100644 index f8d49c3..0000000 --- a/tools/blktap2/control/tap-ctl-list.c +++ /dev/null @@ -1,536 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <glob.h> - -#include "tap-ctl.h" -#include "blktap2.h" -#include "list.h" - -static void -free_list(tap_list_t *entry) -{ - if (entry->type) { - free(entry->type); - entry->type = NULL; - } - - if (entry->path) { - free(entry->path); - entry->path = NULL; - } - - free(entry); -} - -int -_parse_params(const char *params, char **type, char **path) -{ - char *ptr; - size_t len; - - ptr = strchr(params, ':'); - if (!ptr) - return -EINVAL; - - len = ptr - params; - - *type = strndup(params, len); - *path = strdup(params + len + 1); - - if (!*type || !*path) { - free(*type); - *type = NULL; - - free(*path); - *path = NULL; - - return -errno; - } - - return 0; -} - -static int -init_list(tap_list_t *entry, - int tap_id, pid_t tap_pid, int vbd_minor, int vbd_state, - const char *params) -{ - int err = 0; - - entry->id = tap_id; - entry->pid = tap_pid; - entry->minor = vbd_minor; - entry->state = vbd_state; - - if (params) - err = _parse_params(params, &entry->type, &entry->path); - - return err; -} - -void -tap_ctl_free_list(tap_list_t **list) -{ - tap_list_t **_entry; - - for (_entry = list; *_entry != NULL; ++_entry) - free_list(*_entry); - - free(list); -} - -static tap_list_t** -tap_ctl_alloc_list(int n) -{ - tap_list_t **list, *entry; - size_t size; - int i; - - size = sizeof(tap_list_t*) * (n+1); - list = malloc(size); - if (!list) - goto fail; - - memset(list, 0, size); - - for (i = 0; i < n; ++i) { - tap_list_t *entry; - - entry = malloc(sizeof(tap_list_t)); - if (!entry) - goto fail; - - memset(entry, 0, sizeof(tap_list_t)); - - list[i] = entry; - } - - return list; - -fail: - if (list) - tap_ctl_free_list(list); - - return NULL; -} - -static int -tap_ctl_list_length(const tap_list_t **list) -{ - const tap_list_t **_entry; - int n; - - n = 0; - for (_entry = list; *_entry != NULL; ++_entry) - n++; - - return n; -} - -static int -_tap_minor_cmp(const void *a, const void *b) -{ - return *(int*)a - *(int*)b; -} - -int -_tap_ctl_find_minors(int **_minorv) -{ - glob_t glbuf = { 0 }; - const char *pattern, *format; - int *minorv = NULL, n_minors = 0; - int err, i; - - pattern = BLKTAP2_SYSFS_DIR"/blktap*"; - format = BLKTAP2_SYSFS_DIR"/blktap%d"; - - n_minors = 0; - minorv = NULL; - - err = glob(pattern, 0, NULL, &glbuf); - switch (err) { - case GLOB_NOMATCH: - goto done; - - case GLOB_ABORTED: - case GLOB_NOSPACE: - err = -errno; - EPRINTF("%s: glob failed, err %d", pattern, err); - goto fail; - } - - minorv = malloc(sizeof(int) * glbuf.gl_pathc); - if (!minorv) { - err = -errno; - goto fail; - } - - for (i = 0; i < glbuf.gl_pathc; ++i) { - int n; - - n = sscanf(glbuf.gl_pathv[i], format, &minorv[n_minors]); - if (n != 1) - continue; - - n_minors++; - } - - qsort(minorv, n_minors, sizeof(int), _tap_minor_cmp); - -done: - *_minorv = minorv; - err = 0; - -out: - if (glbuf.gl_pathv) - globfree(&glbuf); - - return err ? : n_minors; - -fail: - if (minorv) - free(minorv); - - goto out; -} - -struct tapdisk { - int id; - pid_t pid; - struct list_head list; -}; - -static int -_tap_tapdisk_cmp(const void *a, const void *b) -{ - return ((struct tapdisk*)a)->id - ((struct tapdisk*)b)->id; -} - -int -_tap_ctl_find_tapdisks(struct tapdisk **_tapv) -{ - glob_t glbuf = { 0 }; - const char *pattern, *format; - struct tapdisk *tapv = NULL; - int err, i, n_taps = 0; - - pattern = BLKTAP2_CONTROL_DIR"/"BLKTAP2_CONTROL_SOCKET"*"; - format = BLKTAP2_CONTROL_DIR"/"BLKTAP2_CONTROL_SOCKET"%d"; - - n_taps = 0; - tapv = NULL; - - err = glob(pattern, 0, NULL, &glbuf); - switch (err) { - case GLOB_NOMATCH: - goto done; - - case GLOB_ABORTED: - case GLOB_NOSPACE: - err = -errno; - EPRINTF("%s: glob failed, err %d", pattern, err); - goto fail; - } - - tapv = malloc(sizeof(struct tapdisk) * glbuf.gl_pathc); - if (!tapv) { - err = -errno; - goto fail; - } - - for (i = 0; i < glbuf.gl_pathc; ++i) { - struct tapdisk *tap; - int n; - - tap = &tapv[n_taps]; - - err = sscanf(glbuf.gl_pathv[i], format, &tap->id); - if (err != 1) - continue; - - tap->pid = tap_ctl_get_pid(tap->id); - if (tap->pid < 0) - continue; - - n_taps++; - } - - qsort(tapv, n_taps, sizeof(struct tapdisk), _tap_tapdisk_cmp); - - for (i = 0; i < n_taps; ++i) - INIT_LIST_HEAD(&tapv[i].list); - -done: - *_tapv = tapv; - err = 0; - -out: - if (glbuf.gl_pathv) - globfree(&glbuf); - - return err ? : n_taps; - -fail: - if (tapv) - free(tapv); - - goto out; -} - -struct tapdisk_list { - int minor; - int state; - char *params; - struct list_head entry; -}; - -int -_tap_ctl_list_tapdisk(int id, struct list_head *_list) -{ - tapdisk_message_t message; - struct list_head list; - struct tapdisk_list *tl, *next; - int err, sfd; - - err = tap_ctl_connect_id(id, &sfd); - if (err) - return err; - - memset(&message, 0, sizeof(message)); - message.type = TAPDISK_MESSAGE_LIST; - message.cookie = -1; - - err = tap_ctl_write_message(sfd, &message, 2); - if (err) - return err; - - INIT_LIST_HEAD(&list); - do { - err = tap_ctl_read_message(sfd, &message, 2); - if (err) { - err = -EPROTO; - break; - } - - if (message.u.list.count == 0) - break; - - tl = malloc(sizeof(struct tapdisk_list)); - if (!tl) { - err = -ENOMEM; - break; - } - - tl->minor = message.u.list.minor; - tl->state = message.u.list.state; - if (message.u.list.path[0] != 0) { - tl->params = strndup(message.u.list.path, - sizeof(message.u.list.path)); - if (!tl->params) { - err = -errno; - break; - } - } else - tl->params = NULL; - - list_add(&tl->entry, &list); - } while (1); - - if (err) - list_for_each_entry_safe(tl, next, &list, entry) { - list_del(&tl->entry); - free(tl->params); - free(tl); - } - - close(sfd); - list_splice(&list, _list); - return err; -} - -void -_tap_ctl_free_tapdisks(struct tapdisk *tapv, int n_taps) -{ - struct tapdisk *tap; - - for (tap = tapv; tap < &tapv[n_taps]; ++tap) { - struct tapdisk_list *tl, *next; - - list_for_each_entry_safe(tl, next, &tap->list, entry) { - free(tl->params); - free(tl); - } - } - - free(tapv); -} - -int -_tap_list_join3(int n_minors, int *minorv, int n_taps, struct tapdisk *tapv, - tap_list_t ***_list) -{ - tap_list_t **list, **_entry; - int i, _m, err; - - list = tap_ctl_alloc_list(n_minors + n_taps); - if (!list) { - err = -ENOMEM; - goto fail; - } - - _entry = list; - - for (i = 0; i < n_taps; ++i) { - struct tapdisk *tap = &tapv[i]; - struct tapdisk_list *tl; - - /* orphaned tapdisk */ - if (list_empty(&tap->list)) { - err = init_list(*_entry++, tap->id, tap->pid, -1, -1, NULL); - if (err) - goto fail; - continue; - } - - list_for_each_entry(tl, &tap->list, entry) { - - err = init_list(*_entry++, - tap->id, tap->pid, - tl->minor, tl->state, tl->params); - if (err) - goto fail; - - if (tl->minor >= 0) { - /* clear minor */ - for (_m = 0; _m < n_minors; ++_m) { - if (minorv[_m] == tl->minor) { - minorv[_m] = -1; - break; - } - } - } - } - } - - /* orphaned minors */ - for (_m = 0; _m < n_minors; ++_m) { - int minor = minorv[_m]; - if (minor >= 0) { - err = init_list(*_entry++, -1, -1, minor, -1, NULL); - if (err) - goto fail; - } - } - - /* free extraneous list entries */ - for (; *_entry != NULL; ++_entry) { - free_list(*_entry); - *_entry = NULL; - } - - *_list = list; - - return 0; - -fail: - if (list) - tap_ctl_free_list(list); - - return err; -} - -int -tap_ctl_list(tap_list_t ***list) -{ - int n_taps, n_minors, err, *minorv; - struct tapdisk *tapv, *tap; - - n_taps = -1; - n_minors = -1; - - err = n_minors = _tap_ctl_find_minors(&minorv); - if (err < 0) - goto out; - - err = n_taps = _tap_ctl_find_tapdisks(&tapv); - if (err < 0) - goto out; - - for (tap = tapv; tap < &tapv[n_taps]; ++tap) { - err = _tap_ctl_list_tapdisk(tap->id, &tap->list); - if (err) - goto out; - } - - err = _tap_list_join3(n_minors, minorv, n_taps, tapv, list); - -out: - if (n_taps > 0) - _tap_ctl_free_tapdisks(tapv, n_taps); - - if (n_minors > 0) - free(minorv); - - return err; -} - -int -tap_ctl_find(const char *type, const char *path, tap_list_t *tap) -{ - tap_list_t **list, **_entry; - int ret = -ENOENT, err; - - err = tap_ctl_list(&list); - if (err) - return err; - - for (_entry = list; *_entry != NULL; ++_entry) { - tap_list_t *entry = *_entry; - - if (type && (!entry->type || strcmp(entry->type, type))) - continue; - - if (path && (!entry->path || strcmp(entry->path, path))) - continue; - - *tap = *entry; - tap->type = tap->path = NULL; - ret = 0; - break; - } - - tap_ctl_free_list(list); - - return ret; -} diff --git a/tools/blktap2/control/tap-ctl-major.c b/tools/blktap2/control/tap-ctl-major.c deleted file mode 100644 index 847af28..0000000 --- a/tools/blktap2/control/tap-ctl-major.c +++ /dev/null @@ -1,69 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> - -#include "tap-ctl.h" - -int -tap_ctl_blk_major(void) -{ - FILE *devices; - int rv, major; - - devices = fopen("/proc/devices", "r"); - if (!devices) { - rv = -errno; - goto out; - } - - do { - char buf[32], *s; - int n, offset; - - s = fgets(buf, sizeof(buf), devices); - if (!s) - break; - - major = -ENODEV; - offset = 0; - - n = sscanf(buf, "%d tapdev%n", &major, &offset); - if (n == 1 && offset) - break; - } while (1); - - rv = major; - -out: - if (devices) - fclose(devices); - - return rv; -} diff --git a/tools/blktap2/control/tap-ctl-open.c b/tools/blktap2/control/tap-ctl-open.c deleted file mode 100644 index 5961c99..0000000 --- a/tools/blktap2/control/tap-ctl-open.c +++ /dev/null @@ -1,75 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <getopt.h> - -#include "tap-ctl.h" -#include "blktaplib.h" - -int -tap_ctl_open(const int id, const int minor, const char *params) -{ - int err; - tapdisk_message_t message; - - memset(&message, 0, sizeof(message)); - message.type = TAPDISK_MESSAGE_OPEN; - message.cookie = minor; - message.u.params.storage = TAPDISK_STORAGE_TYPE_DEFAULT; - message.u.params.devnum = minor; - - err = snprintf(message.u.params.path, - sizeof(message.u.params.path) - 1, "%s", params); - if (err >= sizeof(message.u.params.path)) { - EPRINTF("name too long\n"); - return ENAMETOOLONG; - } - - err = tap_ctl_connect_send_and_receive(id, &message, 5); - if (err) - return err; - - switch (message.type) { - case TAPDISK_MESSAGE_OPEN_RSP: - break; - case TAPDISK_MESSAGE_ERROR: - err = -message.u.response.error; - EPRINTF("open failed, err %d\n", err); - break; - default: - EPRINTF("got unexpected result '%s' from %d\n", - tapdisk_message_name(message.type), id); - err = EINVAL; - } - - return err; -} diff --git a/tools/blktap2/control/tap-ctl-pause.c b/tools/blktap2/control/tap-ctl-pause.c deleted file mode 100644 index 5e31a58..0000000 --- a/tools/blktap2/control/tap-ctl-pause.c +++ /dev/null @@ -1,59 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> - -#include "tap-ctl.h" - -int -tap_ctl_pause(const int id, const int minor) -{ - int err; - tapdisk_message_t message; - - memset(&message, 0, sizeof(message)); - message.type = TAPDISK_MESSAGE_PAUSE; - message.cookie = minor; - - err = tap_ctl_connect_send_and_receive(id, &message, 5); - if (err) - return err; - - if (message.type == TAPDISK_MESSAGE_PAUSE_RSP) - err = message.u.response.error; - else { - err = EINVAL; - EPRINTF("got unexpected result '%s' from %d\n", - tapdisk_message_name(message.type), id); - } - - return err; -} diff --git a/tools/blktap2/control/tap-ctl-spawn.c b/tools/blktap2/control/tap-ctl-spawn.c deleted file mode 100644 index 31a651e..0000000 --- a/tools/blktap2/control/tap-ctl-spawn.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <sys/wait.h> - -#include "tap-ctl.h" -#include "blktap2.h" - -static pid_t -__tap_ctl_spawn(int *readfd) -{ - int err, child, channel[2]; - char *tapdisk; - - if (pipe(channel)) { - EPRINTF("pipe failed: %d\n", errno); - return -errno; - } - - if ((child = fork()) == -1) { - EPRINTF("fork failed: %d\n", errno); - return -errno; - } - - if (child) { - close(channel[1]); - *readfd = channel[0]; - return child; - } - - if (dup2(channel[1], STDOUT_FILENO) == -1) { - EPRINTF("dup2 failed: %d\n", errno); - exit(errno); - } - - if (dup2(channel[1], STDERR_FILENO) == -1) { - EPRINTF("dup2 failed: %d\n", errno); - exit(errno); - } - - close(channel[0]); - close(channel[1]); - - tapdisk = getenv("TAPDISK2"); - if (!tapdisk) - tapdisk = "tapdisk2"; - - execlp(tapdisk, tapdisk, NULL); - - EPRINTF("exec failed\n"); - exit(1); -} - -pid_t -tap_ctl_get_pid(const int id) -{ - int err; - tapdisk_message_t message; - - memset(&message, 0, sizeof(message)); - message.type = TAPDISK_MESSAGE_PID; - - err = tap_ctl_connect_send_and_receive(id, &message, 2); - if (err) - return err; - - return message.u.tapdisk_pid; -} - -static int -tap_ctl_wait(pid_t child) -{ - pid_t pid; - int status; - - pid = waitpid(child, &status, 0); - if (pid < 0) { - EPRINTF("wait(%d) failed, err %d\n", child, errno); - return -errno; - } - - if (WIFEXITED(status)) { - int code = WEXITSTATUS(status); - if (code) - EPRINTF("tapdisk2[%d] failed, status %d\n", child, code); - return -code; - } - - if (WIFSIGNALED(status)) { - int signo = WTERMSIG(status); - EPRINTF("tapdisk2[%d] killed by signal %d\n", child, signo); - return -EINTR; - } - - EPRINTF("tapdisk2[%d]: unexpected status %#x\n", child, status); - return -EAGAIN; -} - -static int -tap_ctl_get_child_id(int readfd) -{ - int id; - FILE *f; - - f = fdopen(readfd, "r"); - if (!f) { - EPRINTF("fdopen failed: %d\n", errno); - return -1; - } - - errno = 0; - if (fscanf(f, BLKTAP2_CONTROL_DIR"/" - BLKTAP2_CONTROL_SOCKET"%d", &id) != 1) { - errno = (errno ? : EINVAL); - EPRINTF("parsing id failed: %d\n", errno); - id = -1; - } - - fclose(f); - return id; -} - -int -tap_ctl_spawn(void) -{ - pid_t child; - int err, id, readfd; - - readfd = -1; - - child = __tap_ctl_spawn(&readfd); - if (child < 0) - return child; - - err = tap_ctl_wait(child); - if (err) - return err; - - id = tap_ctl_get_child_id(readfd); - if (id < 0) - EPRINTF("get_id failed, child %d err %d\n", child, errno); - - return id; -} diff --git a/tools/blktap2/control/tap-ctl-unpause.c b/tools/blktap2/control/tap-ctl-unpause.c deleted file mode 100644 index dfb7450..0000000 --- a/tools/blktap2/control/tap-ctl-unpause.c +++ /dev/null @@ -1,64 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <getopt.h> - -#include "tap-ctl.h" - -int -tap_ctl_unpause(const int id, const int minor, const char *params) -{ - int err; - tapdisk_message_t message; - - memset(&message, 0, sizeof(message)); - message.type = TAPDISK_MESSAGE_RESUME; - message.cookie = minor; - - if (params) - strncpy(message.u.params.path, params, - sizeof(message.u.params.path) - 1); - - err = tap_ctl_connect_send_and_receive(id, &message, 15); - if (err) - return err; - - if (message.type == TAPDISK_MESSAGE_RESUME_RSP) - err = message.u.response.error; - else { - err = EINVAL; - EPRINTF("got unexpected result '%s' from %d\n", - tapdisk_message_name(message.type), id); - } - - return err; -} diff --git a/tools/blktap2/control/tap-ctl.c b/tools/blktap2/control/tap-ctl.c deleted file mode 100644 index e254f07..0000000 --- a/tools/blktap2/control/tap-ctl.c +++ /dev/null @@ -1,815 +0,0 @@ -/* - * Copyright (c) 2008, XenSource Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of XenSource Inc. nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT OWNER - * OR CONTRIBUTORS 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 <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <getopt.h> - -#include "tap-ctl.h" - -typedef int (*tap_ctl_func_t) (int, char **); - -struct command { - char *name; - tap_ctl_func_t func; -}; - -static void -tap_cli_list_usage(FILE *stream) -{ - fprintf(stream, - "usage: list [-h] [-p pid] [-m minor] [-t type] [-f file]\n"); -} - -static void -tap_ctl_list_row(tap_list_t *entry) -{ - char minor_str[10] = "-"; - char state_str[10] = "-"; - char pid_str[10] = "-"; - - if (entry->pid != -1) - sprintf(pid_str, "%d", entry->pid); - - if (entry->minor != -1) - sprintf(minor_str, "%d", entry->minor); - - if (entry->state != -1) - sprintf(state_str, "%x", entry->state); - - printf("%8s %2s %4s %10s %s\n", - pid_str, minor_str, state_str, - entry->type ? : "-", entry->path ? : "-"); -} - -static void -tap_ctl_list_dict(tap_list_t *entry) -{ - int d = 0; - - if (entry->pid != -1) { - if (d) putc(' ', stdout); - d = printf("pid=%d", entry->pid); - } - - if (entry->minor != -1) { - if (d) putc(' ', stdout); - d = printf("minor=%d", entry->minor); - } - - if (entry->state != -1) { - if (d) putc(' ', stdout); - d = printf("state=%d", entry->state); - } - - if (entry->type && entry->path) { - if (d) putc(' ', stdout); - d = printf("args=%s:%s", entry->type, entry->path); - } - - putc('\n', stdout); -} - -int -tap_cli_list(int argc, char **argv) -{ - tap_list_t **list, **_entry; - int c, minor, tty, err; - const char *type, *file; - pid_t pid; - - err = tap_ctl_list(&list); - if (err) - return -err; - - pid = -1; - minor = -1; - type = NULL; - file = NULL; - - while ((c = getopt(argc, argv, "m:p:t:f:h")) != -1) { - switch (c) { - case 'm': - minor = atoi(optarg); - break; - case 'p': - pid = atoi(optarg); - break; - case 't': - type = optarg; - break; - case 'f': - file = optarg; - break; - case '?': - goto usage; - case 'h': - tap_cli_list_usage(stdout); - return 0; - } - } - - tty = isatty(STDOUT_FILENO); - - for (_entry = list; *_entry != NULL; ++_entry) { - tap_list_t *entry = *_entry; - - if (minor >= 0 && entry->minor != minor) - continue; - - if (pid >= 0 && entry->pid != pid) - continue; - - if (type && (!entry->type || strcmp(entry->type, type))) - continue; - - if (file && (!entry->path || strcmp(entry->path, file))) - continue; - - if (tty) - tap_ctl_list_row(entry); - else - tap_ctl_list_dict(entry); - } - - tap_ctl_free_list(list); - - return 0; - -usage: - tap_cli_list_usage(stderr); - return EINVAL; -} - -static void -tap_cli_allocate_usage(FILE *stream) -{ - fprintf(stream, "usage: allocate [-d device name]>\n"); -} - -static int -tap_cli_allocate(int argc, char **argv) -{ - char *devname; - int c, minor, err; - - devname = NULL; - - optind = 0; - while ((c = getopt(argc, argv, "d:h")) != -1) { - switch (c) { - case 'd': - devname = optarg; - break; - case '?': - goto usage; - case 'h': - tap_cli_allocate_usage(stdout); - return 0; - } - } - - err = tap_ctl_allocate(&minor, &devname); - if (!err) - printf("%s\n", devname); - - return err; - -usage: - tap_cli_allocate_usage(stderr); - return EINVAL; -} - -static void -tap_cli_free_usage(FILE *stream) -{ - fprintf(stream, "usage: free <-m minor>\n"); -} - -static int -tap_cli_free(int argc, char **argv) -{ - int c, minor; - - minor = -1; - - optind = 0; - while ((c = getopt(argc, argv, "m:h")) != -1) { - switch (c) { - case 'm': - minor = atoi(optarg); - break; - case '?': - goto usage; - case 'h': - tap_cli_free_usage(stdout); - return 0; - } - } - - if (minor == -1) - goto usage; - - return tap_ctl_free(minor); - -usage: - tap_cli_free_usage(stderr); - return EINVAL; -} - -static void -tap_cli_create_usage(FILE *stream) -{ - fprintf(stream, "usage: create <-a args> [-d device name]\n"); -} - -static int -tap_cli_create(int argc, char **argv) -{ - int c, err; - char *args, *devname; - - args = NULL; - devname = NULL; - - optind = 0; - while ((c = getopt(argc, argv, "a:d:h")) != -1) { - switch (c) { - case 'a': - args = optarg; - break; - case 'd': - devname = optarg; - break; - case '?': - goto usage; - case 'h': - tap_cli_create_usage(stdout); - return 0; - } - } - - if (!args) - goto usage; - - err = tap_ctl_create(args, &devname); - if (!err) - printf("%s\n", devname); - - return err; - -usage: - tap_cli_create_usage(stderr); - return EINVAL; -} - -static void -tap_cli_destroy_usage(FILE *stream) -{ - fprintf(stream, "usage: destroy <-p pid> <-m minor>\n"); -} - -static int -tap_cli_destroy(int argc, char **argv) -{ - int c, pid, minor; - - pid = -1; - minor = -1; - - optind = 0; - while ((c = getopt(argc, argv, "p:m:h")) != -1) { - switch (c) { - case 'p': - pid = atoi(optarg); - break; - case 'm': - minor = atoi(optarg); - break; - case '?': - goto usage; - case 'h': - tap_cli_destroy_usage(stdout); - return 0; - } - } - - if (pid == -1 || minor == -1) - goto usage; - - return tap_ctl_destroy(pid, minor); - -usage: - tap_cli_destroy_usage(stderr); - return EINVAL; -} - -static void -tap_cli_spawn_usage(FILE *stream) -{ - fprintf(stream, "usage: spawn\n"); -} - -static int -tap_cli_spawn(int argc, char **argv) -{ - int c; - pid_t task; - - optind = 0; - while ((c = getopt(argc, argv, "h")) != -1) { - switch (c) { - case '?': - goto usage; - case 'h': - tap_cli_spawn_usage(stdout); - return 0; - } - } - - task = tap_ctl_spawn(); - if (task < 0) { - printf("spawn failed: %d\n", errno); - return task; - } - - printf("tapdisk spawned with pid %d\n", task); - return 0; - -usage: - tap_cli_spawn_usage(stderr); - return EINVAL; -} - -static void -tap_cli_attach_usage(FILE *stream) -{ - fprintf(stream, "usage: attach <-p pid> <-m minor>\n"); -} - -static int -tap_cli_attach(int argc, char **argv) -{ - int c, pid, minor; - - pid = -1; - minor = -1; - - optind = 0; - while ((c = getopt(argc, argv, "p:m:h")) != -1) { - switch (c) { - case 'p': _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxx https://lists.xenproject.org/xen-changelog

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