[Midnightbsd-cvs] src [10831] trunk/usr.sbin/camdd: add camdd
laffer1 at midnightbsd.org
laffer1 at midnightbsd.org
Sun Jun 10 16:33:29 EDT 2018
Revision: 10831
http://svnweb.midnightbsd.org/src/?rev=10831
Author: laffer1
Date: 2018-06-10 16:33:28 -0400 (Sun, 10 Jun 2018)
Log Message:
-----------
add camdd
Added Paths:
-----------
trunk/usr.sbin/camdd/
trunk/usr.sbin/camdd/Makefile
trunk/usr.sbin/camdd/camdd.8
trunk/usr.sbin/camdd/camdd.c
Added: trunk/usr.sbin/camdd/Makefile
===================================================================
--- trunk/usr.sbin/camdd/Makefile (rev 0)
+++ trunk/usr.sbin/camdd/Makefile 2018-06-10 20:33:28 UTC (rev 10831)
@@ -0,0 +1,12 @@
+# $MidnightBSD$
+# $FreeBSD: stable/10/usr.sbin/camdd/Makefile 291716 2015-12-03 20:54:55Z ken $
+
+PROG= camdd
+SRCS= camdd.c
+SDIR= ${.CURDIR}/../../sys
+DPADD= ${LIBCAM} ${LIBMT} ${LIBSBUF} ${LIBBSDXML} ${LIBUTIL} ${LIBTHR}
+LDADD= -lcam -lmt -lsbuf -lbsdxml -lutil -lthr
+NO_WTHREAD_SAFETY= 1
+MAN= camdd.8
+
+.include <bsd.prog.mk>
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Added: trunk/usr.sbin/camdd/camdd.8
===================================================================
--- trunk/usr.sbin/camdd/camdd.8 (rev 0)
+++ trunk/usr.sbin/camdd/camdd.8 2018-06-10 20:33:28 UTC (rev 10831)
@@ -0,0 +1,284 @@
+.\" $MidnightBSD$
+.\"
+.\" Copyright (c) 2015 Spectra Logic Corporation
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions, and the following disclaimer,
+.\" without modification.
+.\" 2. Redistributions in binary form must reproduce at minimum a disclaimer
+.\" substantially similar to the "NO WARRANTY" disclaimer below
+.\" ("Disclaimer") and any redistribution must be conditioned upon
+.\" including a substantially similar Disclaimer requirement for further
+.\" binary redistribution.
+.\"
+.\" NO WARRANTY
+.\" 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 MERCHANTIBILITY AND FITNESS FOR
+.\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+.\" HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+.\"
+.\" Authors: Ken Merry (Spectra Logic Corporation)
+.\"
+.\" $FreeBSD: stable/10/usr.sbin/camdd/camdd.8 291716 2015-12-03 20:54:55Z ken $
+.\"
+.Dd November 11, 2015
+.Dt CAMDD 8
+.Os
+.Sh NAME
+.Nm camdd
+.Nd CAM data transfer utility
+.Sh SYNOPSIS
+.Nm
+.Aq Fl i|o Ar pass=pass_dev|file=filename,bs=blocksize,[...]
+.Op Fl C Ar retry_count
+.Op Fl E
+.Op Fl m Ar max_io
+.Op Fl t Ar timeout
+.Op Fl v
+.Op Fl h
+.Sh DESCRIPTION
+The
+.Nm
+utility is a sequential data transfer utility that offers standard
+.Xr read 2
+and
+.Xr write 2
+operation in addition to a mode that uses the asynchronous
+.Xr pass 4
+API.
+The asynchronous
+.Xr pass 4
+API allows multiple requests to be queued to a device simultaneously.
+.Pp
+.Nm
+collects performance information and will display it when the transfer
+completes, when
+.Nm
+is terminated or when it receives a SIGINFO signal.
+.Pp
+The following options are available:
+.Bl -tag -width 12n
+.It Fl i | o Ar args
+Specify the input and output device or file.
+Both
+.Fl i
+and
+.Fl o
+must be specified.
+There are a number of parameters that can be specified.
+One of the first two (file or pass) MUST be specified to indicate which I/O
+method to use on the device in question.
+.Bl -tag -width 9n
+.It pass=dev
+Specify a
+.Xr pass 4
+device to operate on.
+This requests that
+.Nm
+access the device in question be accessed via the asynchronous
+.Xr pass 4
+interface.
+.Pp
+The device name can be a
+.Xr pass 4
+name and unit number, for instance
+.Dq pass0 ,
+or a regular peripheral driver name and unit number, for instance
+.Dq da5 .
+It can also be the path of a
+.Xr pass 4
+or other disk device, like
+.Dq /dev/da5 .
+It may also be a bus:target:lun, for example:
+.Dq 0:5:0 .
+.Pp
+Only
+.Xr pass 4
+devices for
+.Tn SCSI
+disk-like devices are supported.
+.Tn ATA
+devices are not currently supported, but support could be added later.
+Specifically,
+.Tn SCSI
+Direct Access (type 0), WORM (type 4), CDROM (type 5), and RBC (Reduced
+Block Command, type 14) devices are supported.
+Tape drives, medium changers, enclosures etc. are not supported.
+.It file=path
+Specify a file or device to operate on.
+This requests that the file or device in question be accessed using the
+standard
+.Xr read 2
+and
+.Xr write 2
+system calls.
+The file interface does not support queueing multiple commands at a time.
+It does support probing disk sector size and capacity information, and tape
+blocksize and maximum transfer size information.
+The file interface supports standard files, disks, tape drives, special
+devices, pipes and standard input and output.
+If the file is specified as a
+.Dq - ,
+standard input or standard output are used.
+For tape devices, the specified blocksize will be the size that
+.Nm
+attempts to use to write to or read from the tape.
+When writing to a tape device, the blocksize is treated like a disk sector
+size.
+So, that means
+.Nm
+will not write anything smaller than the sector size.
+At the end of a transfer, if there isn't sufficient data from the reader
+to yield a full block,
+.Nm
+will add zeros on the end of the data from the reader to make up a full
+block.
+.It bs=N
+Specify the blocksize to use for transfers.
+.Nm
+will attempt to read or write using the requested blocksize.
+.Pp
+Note that the blocksize given only applies to either the input or the
+output path.
+To use the same blocksize for the input and output transfers, you must
+specify that blocksize with both the
+.Fl i
+and
+.Fl o
+arguments.
+.Pp
+The blocksize may be specified in bytes, or using any suffix (e.g. k, M, G)
+supported by
+.Xr expand_number 3 .
+.It offset=N
+Specify the starting offset for the input or output device or file.
+The offset may be specified in bytes, or by using any suffix (e.g. k, M, G)
+supported by
+.Xr expand_number 3 .
+.It depth=N
+Specify a desired queue depth for the input or output path.
+.Nm
+will attempt to keep the requested number of requests of the specified
+blocksize queued to the input or output device.
+Queue depths greater than 1 are only supported for the asynchronous
+.Xr pass 4
+output method.
+The queue depth is maintained on a best effort basis, and may not be
+possible to maintain for especially fast devices.
+For writes, maintaining the queue depth also depends on a sufficiently
+fast reading device.
+.It mcs=N
+Specify the minimum command size to use for
+.Xr pass 4
+devices.
+Some devices do not support 6 byte
+.Tn SCSI
+commands.
+The
+.Xr da 4
+device handles this restriction automatically, but the
+.Xr pass 4
+device allows the user to specify the
+.Tn SCSI
+command used.
+If a device does not accept 6 byte
+.Tn SCSI
+READ/WRITE commands (which is the default at lower LBAs), it will generally
+accept 10 byte
+.Tn SCSI
+commands instead.
+.It debug=N
+Specify the debug level for this device.
+There is currently only one debug level setting, so setting this to any
+non-zero value will turn on debugging.
+The debug facility may be expanded in the future.
+.El
+.It Fl C Ar count
+Specify the retry count for commands sent via the asynchronous
+.Xr pass 4
+interface.
+This does not apply to commands sent via the file interface.
+.It Fl E
+Enable kernel error recovery for the
+.Xr pass 4
+driver.
+If error recovery is not enabled, unit attention conditions and other
+transient failures may cause the transfer to fail.
+.It Fl m Ar size
+Specify the maximum amount of data to be transferred.
+This may be specified in bytes, or by using any suffix (e.g. K, M, G)
+supported by
+.Xr expand_number 3 .
+.It Fl t Ar timeout
+Specify the command timeout in seconds to use for commands sent via the
+.Xr pass 4
+driver.
+.It Fl v
+Enable verbose reporting of errors.
+This is recommended to aid in debugging any
+.Tn SCSI
+issues that come up.
+.It Fl h
+Display the
+.Nm
+usage message.
+.El
+.Pp
+If
+.Nm
+receives a SIGINFO signal, it will print the current input and output byte
+counts, elapsed runtime and average throughput.
+If
+.Nm
+receives a SIGINT signal, it will print the current input and output byte
+counts, elapsed runtime and average throughput and then exit.
+.Sh EXAMPLES
+.Dl camdd -i pass=da8,bs=512k,depth=4 -o pass=da3,bs=512k,depth=4
+.Pp
+Copy all data from da8 to da3 using a blocksize of 512k for both drives,
+and attempt to maintain a queue depth of 4 on both the input and output
+devices.
+The transfer will stop when the end of either device is reached.
+.Pp
+.Dl camdd -i file=/dev/zero,bs=1M -o pass=da5,bs=1M,depth=4 -m 100M
+.Pp
+Read 1MB blocks of zeros from /dev/zero, and write them to da5 with a
+desired queue depth of 4.
+Stop the transfer after 100MB has been written.
+.Pp
+.Dl camdd -i pass=da8,bs=1M,depth=3 -o file=disk.img
+.Pp
+Copy disk da8 using a 1MB blocksize and desired queue depth of 3 to the
+file disk.img.
+.Pp
+.Dl camdd -i file=/etc/rc -o file=-
+.Pp
+Read the file /etc/rc and write it to standard output.
+.Pp
+.Dl camdd -i pass=da10,bs=64k,depth=16 -o file=/dev/nsa0,bs=128k
+.Pp
+Copy 64K blocks from the disk da10 with a queue depth of 16, and write
+to the tape drive sa0 with a 128k blocksize.
+The copy will stop when either the end of the disk or tape is reached.
+.Sh SEE ALSO
+.Xr cam 3 ,
+.Xr cam 4 ,
+.Xr pass 4 ,
+.Xr camcontrol 8
+.Sh HISTORY
+.Nm
+first appeared in
+.Fx 10.2
+.Sh AUTHORS
+.An Kenneth Merry Aq Mt ken at FreeBSD.org
Property changes on: trunk/usr.sbin/camdd/camdd.8
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Added: trunk/usr.sbin/camdd/camdd.c
===================================================================
--- trunk/usr.sbin/camdd/camdd.c (rev 0)
+++ trunk/usr.sbin/camdd/camdd.c 2018-06-10 20:33:28 UTC (rev 10831)
@@ -0,0 +1,3417 @@
+/* $MidnightBSD$ */
+/*-
+ * Copyright (c) 1997-2007 Kenneth D. Merry
+ * Copyright (c) 2013, 2014, 2015 Spectra Logic Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ *
+ * NO WARRANTY
+ * 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 MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ *
+ * Authors: Ken Merry (Spectra Logic Corporation)
+ */
+
+/*
+ * This is eventually intended to be:
+ * - A basic data transfer/copy utility
+ * - A simple benchmark utility
+ * - An example of how to use the asynchronous pass(4) driver interface.
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: stable/10/usr.sbin/camdd/camdd.c 314438 2017-02-28 23:56:14Z asomers $");
+
+#include <sys/ioctl.h>
+#include <sys/stdint.h>
+#include <sys/types.h>
+#include <sys/endian.h>
+#include <sys/param.h>
+#include <sys/sbuf.h>
+#include <sys/stat.h>
+#include <sys/event.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <vm/vm.h>
+#include <machine/bus.h>
+#include <sys/bus.h>
+#include <sys/bus_dma.h>
+#include <sys/mtio.h>
+#include <sys/conf.h>
+#include <sys/disk.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <semaphore.h>
+#include <string.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <err.h>
+#include <libutil.h>
+#include <pthread.h>
+#include <assert.h>
+#include <bsdxml.h>
+
+#include <cam/cam.h>
+#include <cam/cam_debug.h>
+#include <cam/cam_ccb.h>
+#include <cam/scsi/scsi_all.h>
+#include <cam/scsi/scsi_da.h>
+#include <cam/scsi/scsi_pass.h>
+#include <cam/scsi/scsi_message.h>
+#include <cam/scsi/smp_all.h>
+#include <camlib.h>
+#include <mtlib.h>
+#include <zlib.h>
+
+typedef enum {
+ CAMDD_CMD_NONE = 0x00000000,
+ CAMDD_CMD_HELP = 0x00000001,
+ CAMDD_CMD_WRITE = 0x00000002,
+ CAMDD_CMD_READ = 0x00000003
+} camdd_cmdmask;
+
+typedef enum {
+ CAMDD_ARG_NONE = 0x00000000,
+ CAMDD_ARG_VERBOSE = 0x00000001,
+ CAMDD_ARG_DEVICE = 0x00000002,
+ CAMDD_ARG_BUS = 0x00000004,
+ CAMDD_ARG_TARGET = 0x00000008,
+ CAMDD_ARG_LUN = 0x00000010,
+ CAMDD_ARG_UNIT = 0x00000020,
+ CAMDD_ARG_TIMEOUT = 0x00000040,
+ CAMDD_ARG_ERR_RECOVER = 0x00000080,
+ CAMDD_ARG_RETRIES = 0x00000100
+} camdd_argmask;
+
+typedef enum {
+ CAMDD_DEV_NONE = 0x00,
+ CAMDD_DEV_PASS = 0x01,
+ CAMDD_DEV_FILE = 0x02
+} camdd_dev_type;
+
+struct camdd_io_opts {
+ camdd_dev_type dev_type;
+ char *dev_name;
+ uint64_t blocksize;
+ uint64_t queue_depth;
+ uint64_t offset;
+ int min_cmd_size;
+ int write_dev;
+ uint64_t debug;
+};
+
+typedef enum {
+ CAMDD_BUF_NONE,
+ CAMDD_BUF_DATA,
+ CAMDD_BUF_INDIRECT
+} camdd_buf_type;
+
+struct camdd_buf_indirect {
+ /*
+ * Pointer to the source buffer.
+ */
+ struct camdd_buf *src_buf;
+
+ /*
+ * Offset into the source buffer, in bytes.
+ */
+ uint64_t offset;
+ /*
+ * Pointer to the starting point in the source buffer.
+ */
+ uint8_t *start_ptr;
+
+ /*
+ * Length of this chunk in bytes.
+ */
+ size_t len;
+};
+
+struct camdd_buf_data {
+ /*
+ * Buffer allocated when we allocate this camdd_buf. This should
+ * be the size of the blocksize for this device.
+ */
+ uint8_t *buf;
+
+ /*
+ * The amount of backing store allocated in buf. Generally this
+ * will be the blocksize of the device.
+ */
+ uint32_t alloc_len;
+
+ /*
+ * The amount of data that was put into the buffer (on reads) or
+ * the amount of data we have put onto the src_list so far (on
+ * writes).
+ */
+ uint32_t fill_len;
+
+ /*
+ * The amount of data that was not transferred.
+ */
+ uint32_t resid;
+
+ /*
+ * Starting byte offset on the reader.
+ */
+ uint64_t src_start_offset;
+
+ /*
+ * CCB used for pass(4) device targets.
+ */
+ union ccb ccb;
+
+ /*
+ * Number of scatter/gather segments.
+ */
+ int sg_count;
+
+ /*
+ * Set if we had to tack on an extra buffer to round the transfer
+ * up to a sector size.
+ */
+ int extra_buf;
+
+ /*
+ * Scatter/gather list used generally when we're the writer for a
+ * pass(4) device.
+ */
+ bus_dma_segment_t *segs;
+
+ /*
+ * Scatter/gather list used generally when we're the writer for a
+ * file or block device;
+ */
+ struct iovec *iovec;
+};
+
+union camdd_buf_types {
+ struct camdd_buf_indirect indirect;
+ struct camdd_buf_data data;
+};
+
+typedef enum {
+ CAMDD_STATUS_NONE,
+ CAMDD_STATUS_OK,
+ CAMDD_STATUS_SHORT_IO,
+ CAMDD_STATUS_EOF,
+ CAMDD_STATUS_ERROR
+} camdd_buf_status;
+
+struct camdd_buf {
+ camdd_buf_type buf_type;
+ union camdd_buf_types buf_type_spec;
+
+ camdd_buf_status status;
+
+ uint64_t lba;
+ size_t len;
+
+ /*
+ * A reference count of how many indirect buffers point to this
+ * buffer.
+ */
+ int refcount;
+
+ /*
+ * A link back to our parent device.
+ */
+ struct camdd_dev *dev;
+ STAILQ_ENTRY(camdd_buf) links;
+ STAILQ_ENTRY(camdd_buf) work_links;
+
+ /*
+ * A count of the buffers on the src_list.
+ */
+ int src_count;
+
+ /*
+ * List of buffers from our partner thread that are the components
+ * of this buffer for the I/O. Uses src_links.
+ */
+ STAILQ_HEAD(,camdd_buf) src_list;
+ STAILQ_ENTRY(camdd_buf) src_links;
+};
+
+#define NUM_DEV_TYPES 2
+
+struct camdd_dev_pass {
+ int scsi_dev_type;
+ struct cam_device *dev;
+ uint64_t max_sector;
+ uint32_t block_len;
+ uint32_t cpi_maxio;
+};
+
+typedef enum {
+ CAMDD_FILE_NONE,
+ CAMDD_FILE_REG,
+ CAMDD_FILE_STD,
+ CAMDD_FILE_PIPE,
+ CAMDD_FILE_DISK,
+ CAMDD_FILE_TAPE,
+ CAMDD_FILE_TTY,
+ CAMDD_FILE_MEM
+} camdd_file_type;
+
+typedef enum {
+ CAMDD_FF_NONE = 0x00,
+ CAMDD_FF_CAN_SEEK = 0x01
+} camdd_file_flags;
+
+struct camdd_dev_file {
+ int fd;
+ struct stat sb;
+ char filename[MAXPATHLEN + 1];
+ camdd_file_type file_type;
+ camdd_file_flags file_flags;
+ uint8_t *tmp_buf;
+};
+
+struct camdd_dev_block {
+ int fd;
+ uint64_t size_bytes;
+ uint32_t block_len;
+};
+
+union camdd_dev_spec {
+ struct camdd_dev_pass pass;
+ struct camdd_dev_file file;
+ struct camdd_dev_block block;
+};
+
+typedef enum {
+ CAMDD_DEV_FLAG_NONE = 0x00,
+ CAMDD_DEV_FLAG_EOF = 0x01,
+ CAMDD_DEV_FLAG_PEER_EOF = 0x02,
+ CAMDD_DEV_FLAG_ACTIVE = 0x04,
+ CAMDD_DEV_FLAG_EOF_SENT = 0x08,
+ CAMDD_DEV_FLAG_EOF_QUEUED = 0x10
+} camdd_dev_flags;
+
+struct camdd_dev {
+ camdd_dev_type dev_type;
+ union camdd_dev_spec dev_spec;
+ camdd_dev_flags flags;
+ char device_name[MAXPATHLEN+1];
+ uint32_t blocksize;
+ uint32_t sector_size;
+ uint64_t max_sector;
+ uint64_t sector_io_limit;
+ int min_cmd_size;
+ int write_dev;
+ int retry_count;
+ int io_timeout;
+ int debug;
+ uint64_t start_offset_bytes;
+ uint64_t next_io_pos_bytes;
+ uint64_t next_peer_pos_bytes;
+ uint64_t next_completion_pos_bytes;
+ uint64_t peer_bytes_queued;
+ uint64_t bytes_transferred;
+ uint32_t target_queue_depth;
+ uint32_t cur_active_io;
+ uint8_t *extra_buf;
+ uint32_t extra_buf_len;
+ struct camdd_dev *peer_dev;
+ pthread_mutex_t mutex;
+ pthread_cond_t cond;
+ int kq;
+
+ int (*run)(struct camdd_dev *dev);
+ int (*fetch)(struct camdd_dev *dev);
+
+ /*
+ * Buffers that are available for I/O. Uses links.
+ */
+ STAILQ_HEAD(,camdd_buf) free_queue;
+
+ /*
+ * Free indirect buffers. These are used for breaking a large
+ * buffer into multiple pieces.
+ */
+ STAILQ_HEAD(,camdd_buf) free_indirect_queue;
+
+ /*
+ * Buffers that have been queued to the kernel. Uses links.
+ */
+ STAILQ_HEAD(,camdd_buf) active_queue;
+
+ /*
+ * Will generally contain one of our buffers that is waiting for enough
+ * I/O from our partner thread to be able to execute. This will
+ * generally happen when our per-I/O-size is larger than the
+ * partner thread's per-I/O-size. Uses links.
+ */
+ STAILQ_HEAD(,camdd_buf) pending_queue;
+
+ /*
+ * Number of buffers on the pending queue
+ */
+ int num_pending_queue;
+
+ /*
+ * Buffers that are filled and ready to execute. This is used when
+ * our partner (reader) thread sends us blocks that are larger than
+ * our blocksize, and so we have to split them into multiple pieces.
+ */
+ STAILQ_HEAD(,camdd_buf) run_queue;
+
+ /*
+ * Number of buffers on the run queue.
+ */
+ int num_run_queue;
+
+ STAILQ_HEAD(,camdd_buf) reorder_queue;
+
+ int num_reorder_queue;
+
+ /*
+ * Buffers that have been queued to us by our partner thread
+ * (generally the reader thread) to be written out. Uses
+ * work_links.
+ */
+ STAILQ_HEAD(,camdd_buf) work_queue;
+
+ /*
+ * Buffers that have been completed by our partner thread. Uses
+ * work_links.
+ */
+ STAILQ_HEAD(,camdd_buf) peer_done_queue;
+
+ /*
+ * Number of buffers on the peer done queue.
+ */
+ uint32_t num_peer_done_queue;
+
+ /*
+ * A list of buffers that we have queued to our peer thread. Uses
+ * links.
+ */
+ STAILQ_HEAD(,camdd_buf) peer_work_queue;
+
+ /*
+ * Number of buffers on the peer work queue.
+ */
+ uint32_t num_peer_work_queue;
+};
+
+static sem_t camdd_sem;
+static sig_atomic_t need_exit = 0;
+static sig_atomic_t error_exit = 0;
+static sig_atomic_t need_status = 0;
+
+#ifndef min
+#define min(a, b) (a < b) ? a : b
+#endif
+
+/*
+ * XXX KDM private copy of timespecsub(). This is normally defined in
+ * sys/time.h, but is only enabled in the kernel. If that definition is
+ * enabled in userland, it breaks the build of libnetbsd.
+ */
+#ifndef timespecsub
+#define timespecsub(vvp, uvp) \
+ do { \
+ (vvp)->tv_sec -= (uvp)->tv_sec; \
+ (vvp)->tv_nsec -= (uvp)->tv_nsec; \
+ if ((vvp)->tv_nsec < 0) { \
+ (vvp)->tv_sec--; \
+ (vvp)->tv_nsec += 1000000000; \
+ } \
+ } while (0)
+#endif
+
+
+/* Generically usefull offsets into the peripheral private area */
+#define ppriv_ptr0 periph_priv.entries[0].ptr
+#define ppriv_ptr1 periph_priv.entries[1].ptr
+#define ppriv_field0 periph_priv.entries[0].field
+#define ppriv_field1 periph_priv.entries[1].field
+
+#define ccb_buf ppriv_ptr0
+
+#define CAMDD_FILE_DEFAULT_BLOCK 524288
+#define CAMDD_FILE_DEFAULT_DEPTH 1
+#define CAMDD_PASS_MAX_BLOCK 1048576
+#define CAMDD_PASS_DEFAULT_DEPTH 6
+#define CAMDD_PASS_RW_TIMEOUT 60 * 1000
+
+static int parse_btl(char *tstr, int *bus, int *target, int *lun,
+ camdd_argmask *arglst);
+void camdd_free_dev(struct camdd_dev *dev);
+struct camdd_dev *camdd_alloc_dev(camdd_dev_type dev_type,
+ struct kevent *new_ke, int num_ke,
+ int retry_count, int timeout);
+static struct camdd_buf *camdd_alloc_buf(struct camdd_dev *dev,
+ camdd_buf_type buf_type);
+void camdd_release_buf(struct camdd_buf *buf);
+struct camdd_buf *camdd_get_buf(struct camdd_dev *dev, camdd_buf_type buf_type);
+int camdd_buf_sg_create(struct camdd_buf *buf, int iovec,
+ uint32_t sector_size, uint32_t *num_sectors_used,
+ int *double_buf_needed);
+uint32_t camdd_buf_get_len(struct camdd_buf *buf);
+void camdd_buf_add_child(struct camdd_buf *buf, struct camdd_buf *child_buf);
+int camdd_probe_tape(int fd, char *filename, uint64_t *max_iosize,
+ uint64_t *max_blk, uint64_t *min_blk, uint64_t *blk_gran);
+struct camdd_dev *camdd_probe_file(int fd, struct camdd_io_opts *io_opts,
+ int retry_count, int timeout);
+struct camdd_dev *camdd_probe_pass(struct cam_device *cam_dev,
+ struct camdd_io_opts *io_opts,
+ camdd_argmask arglist, int probe_retry_count,
+ int probe_timeout, int io_retry_count,
+ int io_timeout);
+void *camdd_file_worker(void *arg);
+camdd_buf_status camdd_ccb_status(union ccb *ccb);
+int camdd_queue_peer_buf(struct camdd_dev *dev, struct camdd_buf *buf);
+int camdd_complete_peer_buf(struct camdd_dev *dev, struct camdd_buf *peer_buf);
+void camdd_peer_done(struct camdd_buf *buf);
+void camdd_complete_buf(struct camdd_dev *dev, struct camdd_buf *buf,
+ int *error_count);
+int camdd_pass_fetch(struct camdd_dev *dev);
+int camdd_file_run(struct camdd_dev *dev);
+int camdd_pass_run(struct camdd_dev *dev);
+int camdd_get_next_lba_len(struct camdd_dev *dev, uint64_t *lba, ssize_t *len);
+int camdd_queue(struct camdd_dev *dev, struct camdd_buf *read_buf);
+void camdd_get_depth(struct camdd_dev *dev, uint32_t *our_depth,
+ uint32_t *peer_depth, uint32_t *our_bytes,
+ uint32_t *peer_bytes);
+void *camdd_worker(void *arg);
+void camdd_sig_handler(int sig);
+void camdd_print_status(struct camdd_dev *camdd_dev,
+ struct camdd_dev *other_dev,
+ struct timespec *start_time);
+int camdd_rw(struct camdd_io_opts *io_opts, int num_io_opts,
+ uint64_t max_io, int retry_count, int timeout);
+int camdd_parse_io_opts(char *args, int is_write,
+ struct camdd_io_opts *io_opts);
+void usage(void);
+
+/*
+ * Parse out a bus, or a bus, target and lun in the following
+ * format:
+ * bus
+ * bus:target
+ * bus:target:lun
+ *
+ * Returns the number of parsed components, or 0.
+ */
+static int
+parse_btl(char *tstr, int *bus, int *target, int *lun, camdd_argmask *arglst)
+{
+ char *tmpstr;
+ int convs = 0;
+
+ while (isspace(*tstr) && (*tstr != '\0'))
+ tstr++;
+
+ tmpstr = (char *)strtok(tstr, ":");
+ if ((tmpstr != NULL) && (*tmpstr != '\0')) {
+ *bus = strtol(tmpstr, NULL, 0);
+ *arglst |= CAMDD_ARG_BUS;
+ convs++;
+ tmpstr = (char *)strtok(NULL, ":");
+ if ((tmpstr != NULL) && (*tmpstr != '\0')) {
+ *target = strtol(tmpstr, NULL, 0);
+ *arglst |= CAMDD_ARG_TARGET;
+ convs++;
+ tmpstr = (char *)strtok(NULL, ":");
+ if ((tmpstr != NULL) && (*tmpstr != '\0')) {
+ *lun = strtol(tmpstr, NULL, 0);
+ *arglst |= CAMDD_ARG_LUN;
+ convs++;
+ }
+ }
+ }
+
+ return convs;
+}
+
+/*
+ * XXX KDM clean up and free all of the buffers on the queue!
+ */
+void
+camdd_free_dev(struct camdd_dev *dev)
+{
+ if (dev == NULL)
+ return;
+
+ switch (dev->dev_type) {
+ case CAMDD_DEV_FILE: {
+ struct camdd_dev_file *file_dev = &dev->dev_spec.file;
+
+ if (file_dev->fd != -1)
+ close(file_dev->fd);
+ free(file_dev->tmp_buf);
+ break;
+ }
+ case CAMDD_DEV_PASS: {
+ struct camdd_dev_pass *pass_dev = &dev->dev_spec.pass;
+
+ if (pass_dev->dev != NULL)
+ cam_close_device(pass_dev->dev);
+ break;
+ }
+ default:
+ break;
+ }
+
+ free(dev);
+}
+
+struct camdd_dev *
+camdd_alloc_dev(camdd_dev_type dev_type, struct kevent *new_ke, int num_ke,
+ int retry_count, int timeout)
+{
+ struct camdd_dev *dev = NULL;
+ struct kevent *ke;
+ size_t ke_size;
+ int retval = 0;
+
+ dev = malloc(sizeof(*dev));
+ if (dev == NULL) {
+ warn("%s: unable to malloc %zu bytes", __func__, sizeof(*dev));
+ goto bailout;
+ }
+
+ bzero(dev, sizeof(*dev));
+
+ dev->dev_type = dev_type;
+ dev->io_timeout = timeout;
+ dev->retry_count = retry_count;
+ STAILQ_INIT(&dev->free_queue);
+ STAILQ_INIT(&dev->free_indirect_queue);
+ STAILQ_INIT(&dev->active_queue);
+ STAILQ_INIT(&dev->pending_queue);
+ STAILQ_INIT(&dev->run_queue);
+ STAILQ_INIT(&dev->reorder_queue);
+ STAILQ_INIT(&dev->work_queue);
+ STAILQ_INIT(&dev->peer_done_queue);
+ STAILQ_INIT(&dev->peer_work_queue);
+ retval = pthread_mutex_init(&dev->mutex, NULL);
+ if (retval != 0) {
+ warnc(retval, "%s: failed to initialize mutex", __func__);
+ goto bailout;
+ }
+
+ retval = pthread_cond_init(&dev->cond, NULL);
+ if (retval != 0) {
+ warnc(retval, "%s: failed to initialize condition variable",
+ __func__);
+ goto bailout;
+ }
+
+ dev->kq = kqueue();
+ if (dev->kq == -1) {
+ warn("%s: Unable to create kqueue", __func__);
+ goto bailout;
+ }
+
+ ke_size = sizeof(struct kevent) * (num_ke + 4);
+ ke = malloc(ke_size);
+ if (ke == NULL) {
+ warn("%s: unable to malloc %zu bytes", __func__, ke_size);
+ goto bailout;
+ }
+ bzero(ke, ke_size);
+ if (num_ke > 0)
+ bcopy(new_ke, ke, num_ke * sizeof(struct kevent));
+
+ EV_SET(&ke[num_ke++], (uintptr_t)&dev->work_queue, EVFILT_USER,
+ EV_ADD|EV_ENABLE|EV_CLEAR, 0,0, 0);
+ EV_SET(&ke[num_ke++], (uintptr_t)&dev->peer_done_queue, EVFILT_USER,
+ EV_ADD|EV_ENABLE|EV_CLEAR, 0,0, 0);
+ EV_SET(&ke[num_ke++], SIGINFO, EVFILT_SIGNAL, EV_ADD|EV_ENABLE, 0,0,0);
+ EV_SET(&ke[num_ke++], SIGINT, EVFILT_SIGNAL, EV_ADD|EV_ENABLE, 0,0,0);
+
+ retval = kevent(dev->kq, ke, num_ke, NULL, 0, NULL);
+ if (retval == -1) {
+ warn("%s: Unable to register kevents", __func__);
+ goto bailout;
+ }
+
+
+ return (dev);
+
+bailout:
+ free(dev);
+
+ return (NULL);
+}
+
+static struct camdd_buf *
+camdd_alloc_buf(struct camdd_dev *dev, camdd_buf_type buf_type)
+{
+ struct camdd_buf *buf = NULL;
+ uint8_t *data_ptr = NULL;
+
+ /*
+ * We only need to allocate data space for data buffers.
+ */
+ switch (buf_type) {
+ case CAMDD_BUF_DATA:
+ data_ptr = malloc(dev->blocksize);
+ if (data_ptr == NULL) {
+ warn("unable to allocate %u bytes", dev->blocksize);
+ goto bailout_error;
+ }
+ break;
+ default:
+ break;
+ }
+
+ buf = malloc(sizeof(*buf));
+ if (buf == NULL) {
+ warn("unable to allocate %zu bytes", sizeof(*buf));
+ goto bailout_error;
+ }
+
+ bzero(buf, sizeof(*buf));
+ buf->buf_type = buf_type;
+ buf->dev = dev;
+ switch (buf_type) {
+ case CAMDD_BUF_DATA: {
+ struct camdd_buf_data *data;
+
+ data = &buf->buf_type_spec.data;
+
+ data->alloc_len = dev->blocksize;
+ data->buf = data_ptr;
+ break;
+ }
+ case CAMDD_BUF_INDIRECT:
+ break;
+ default:
+ break;
+ }
+ STAILQ_INIT(&buf->src_list);
+
+ return (buf);
+
+bailout_error:
+ free(data_ptr);
+
+ return (NULL);
+}
+
+void
+camdd_release_buf(struct camdd_buf *buf)
+{
+ struct camdd_dev *dev;
+
+ dev = buf->dev;
+
+ switch (buf->buf_type) {
+ case CAMDD_BUF_DATA: {
+ struct camdd_buf_data *data;
+
+ data = &buf->buf_type_spec.data;
+
+ if (data->segs != NULL) {
+ if (data->extra_buf != 0) {
+ void *extra_buf;
+
+ extra_buf = (void *)
+ data->segs[data->sg_count - 1].ds_addr;
+ free(extra_buf);
+ data->extra_buf = 0;
+ }
+ free(data->segs);
+ data->segs = NULL;
+ data->sg_count = 0;
+ } else if (data->iovec != NULL) {
+ if (data->extra_buf != 0) {
+ free(data->iovec[data->sg_count - 1].iov_base);
+ data->extra_buf = 0;
+ }
+ free(data->iovec);
+ data->iovec = NULL;
+ data->sg_count = 0;
+ }
+ STAILQ_INSERT_TAIL(&dev->free_queue, buf, links);
+ break;
+ }
+ case CAMDD_BUF_INDIRECT:
+ STAILQ_INSERT_TAIL(&dev->free_indirect_queue, buf, links);
+ break;
+ default:
+ err(1, "%s: Invalid buffer type %d for released buffer",
+ __func__, buf->buf_type);
+ break;
+ }
+}
+
+struct camdd_buf *
+camdd_get_buf(struct camdd_dev *dev, camdd_buf_type buf_type)
+{
+ struct camdd_buf *buf = NULL;
+
+ switch (buf_type) {
+ case CAMDD_BUF_DATA:
+ buf = STAILQ_FIRST(&dev->free_queue);
+ if (buf != NULL) {
+ struct camdd_buf_data *data;
+ uint8_t *data_ptr;
+ uint32_t alloc_len;
+
+ STAILQ_REMOVE_HEAD(&dev->free_queue, links);
+ data = &buf->buf_type_spec.data;
+ data_ptr = data->buf;
+ alloc_len = data->alloc_len;
+ bzero(buf, sizeof(*buf));
+ data->buf = data_ptr;
+ data->alloc_len = alloc_len;
+ }
+ break;
+ case CAMDD_BUF_INDIRECT:
+ buf = STAILQ_FIRST(&dev->free_indirect_queue);
+ if (buf != NULL) {
+ STAILQ_REMOVE_HEAD(&dev->free_indirect_queue, links);
+
+ bzero(buf, sizeof(*buf));
+ }
+ break;
+ default:
+ warnx("Unknown buffer type %d requested", buf_type);
+ break;
+ }
+
+
+ if (buf == NULL)
+ return (camdd_alloc_buf(dev, buf_type));
+ else {
+ STAILQ_INIT(&buf->src_list);
+ buf->dev = dev;
+ buf->buf_type = buf_type;
+
+ return (buf);
+ }
+}
+
+int
+camdd_buf_sg_create(struct camdd_buf *buf, int iovec, uint32_t sector_size,
+ uint32_t *num_sectors_used, int *double_buf_needed)
+{
+ struct camdd_buf *tmp_buf;
+ struct camdd_buf_data *data;
+ uint8_t *extra_buf = NULL;
+ size_t extra_buf_len = 0;
+ int i, retval = 0;
+
+ data = &buf->buf_type_spec.data;
+
+ data->sg_count = buf->src_count;
+ /*
+ * Compose a scatter/gather list from all of the buffers in the list.
+ * If the length of the buffer isn't a multiple of the sector size,
+ * we'll have to add an extra buffer. This should only happen
+ * at the end of a transfer.
+ */
+ if ((data->fill_len % sector_size) != 0) {
+ extra_buf_len = sector_size - (data->fill_len % sector_size);
+ extra_buf = calloc(extra_buf_len, 1);
+ if (extra_buf == NULL) {
+ warn("%s: unable to allocate %zu bytes for extra "
+ "buffer space", __func__, extra_buf_len);
+ retval = 1;
+ goto bailout;
+ }
+ data->extra_buf = 1;
+ data->sg_count++;
+ }
+ if (iovec == 0) {
+ data->segs = calloc(data->sg_count, sizeof(bus_dma_segment_t));
+ if (data->segs == NULL) {
+ warn("%s: unable to allocate %zu bytes for S/G list",
+ __func__, sizeof(bus_dma_segment_t) *
+ data->sg_count);
+ retval = 1;
+ goto bailout;
+ }
+
+ } else {
+ data->iovec = calloc(data->sg_count, sizeof(struct iovec));
+ if (data->iovec == NULL) {
+ warn("%s: unable to allocate %zu bytes for S/G list",
+ __func__, sizeof(struct iovec) * data->sg_count);
+ retval = 1;
+ goto bailout;
+ }
+ }
+
+ for (i = 0, tmp_buf = STAILQ_FIRST(&buf->src_list);
+ i < buf->src_count && tmp_buf != NULL; i++,
+ tmp_buf = STAILQ_NEXT(tmp_buf, src_links)) {
+
+ if (tmp_buf->buf_type == CAMDD_BUF_DATA) {
+ struct camdd_buf_data *tmp_data;
+
+ tmp_data = &tmp_buf->buf_type_spec.data;
+ if (iovec == 0) {
+ data->segs[i].ds_addr =
+ (bus_addr_t) tmp_data->buf;
+ data->segs[i].ds_len = tmp_data->fill_len -
+ tmp_data->resid;
+ } else {
+ data->iovec[i].iov_base = tmp_data->buf;
+ data->iovec[i].iov_len = tmp_data->fill_len -
+ tmp_data->resid;
+ }
+ if (((tmp_data->fill_len - tmp_data->resid) %
+ sector_size) != 0)
+ *double_buf_needed = 1;
+ } else {
+ struct camdd_buf_indirect *tmp_ind;
+
+ tmp_ind = &tmp_buf->buf_type_spec.indirect;
+ if (iovec == 0) {
+ data->segs[i].ds_addr =
+ (bus_addr_t)tmp_ind->start_ptr;
+ data->segs[i].ds_len = tmp_ind->len;
+ } else {
+ data->iovec[i].iov_base = tmp_ind->start_ptr;
+ data->iovec[i].iov_len = tmp_ind->len;
+ }
+ if ((tmp_ind->len % sector_size) != 0)
+ *double_buf_needed = 1;
+ }
+ }
+
+ if (extra_buf != NULL) {
+ if (iovec == 0) {
+ data->segs[i].ds_addr = (bus_addr_t)extra_buf;
+ data->segs[i].ds_len = extra_buf_len;
+ } else {
+ data->iovec[i].iov_base = extra_buf;
+ data->iovec[i].iov_len = extra_buf_len;
+ }
+ i++;
+ }
+ if ((tmp_buf != NULL) || (i != data->sg_count)) {
+ warnx("buffer source count does not match "
+ "number of buffers in list!");
+ retval = 1;
+ goto bailout;
+ }
+
+bailout:
+ if (retval == 0) {
+ *num_sectors_used = (data->fill_len + extra_buf_len) /
+ sector_size;
+ }
+ return (retval);
+}
+
+uint32_t
+camdd_buf_get_len(struct camdd_buf *buf)
+{
+ uint32_t len = 0;
+
+ if (buf->buf_type != CAMDD_BUF_DATA) {
+ struct camdd_buf_indirect *indirect;
+
+ indirect = &buf->buf_type_spec.indirect;
+ len = indirect->len;
+ } else {
+ struct camdd_buf_data *data;
+
+ data = &buf->buf_type_spec.data;
+ len = data->fill_len;
+ }
+
+ return (len);
+}
+
+void
+camdd_buf_add_child(struct camdd_buf *buf, struct camdd_buf *child_buf)
+{
+ struct camdd_buf_data *data;
+
+ assert(buf->buf_type == CAMDD_BUF_DATA);
+
+ data = &buf->buf_type_spec.data;
+
+ STAILQ_INSERT_TAIL(&buf->src_list, child_buf, src_links);
+ buf->src_count++;
+
+ data->fill_len += camdd_buf_get_len(child_buf);
+}
+
+typedef enum {
+ CAMDD_TS_MAX_BLK,
+ CAMDD_TS_MIN_BLK,
+ CAMDD_TS_BLK_GRAN,
+ CAMDD_TS_EFF_IOSIZE
+} camdd_status_item_index;
+
+static struct camdd_status_items {
+ const char *name;
+ struct mt_status_entry *entry;
+} req_status_items[] = {
+ { "max_blk", NULL },
+ { "min_blk", NULL },
+ { "blk_gran", NULL },
+ { "max_effective_iosize", NULL }
+};
+
+int
+camdd_probe_tape(int fd, char *filename, uint64_t *max_iosize,
+ uint64_t *max_blk, uint64_t *min_blk, uint64_t *blk_gran)
+{
+ struct mt_status_data status_data;
+ char *xml_str = NULL;
+ unsigned int i;
+ int retval = 0;
+
+ retval = mt_get_xml_str(fd, MTIOCEXTGET, &xml_str);
+ if (retval != 0)
+ err(1, "Couldn't get XML string from %s", filename);
+
+ retval = mt_get_status(xml_str, &status_data);
+ if (retval != XML_STATUS_OK) {
+ warn("couldn't get status for %s", filename);
+ retval = 1;
+ goto bailout;
+ } else
+ retval = 0;
+
+ if (status_data.error != 0) {
+ warnx("%s", status_data.error_str);
+ retval = 1;
+ goto bailout;
+ }
+
+ for (i = 0; i < sizeof(req_status_items) /
+ sizeof(req_status_items[0]); i++) {
+ char *name;
+
+ name = __DECONST(char *, req_status_items[i].name);
+ req_status_items[i].entry = mt_status_entry_find(&status_data,
+ name);
+ if (req_status_items[i].entry == NULL) {
+ errx(1, "Cannot find status entry %s",
+ req_status_items[i].name);
+ }
+ }
+
+ *max_iosize = req_status_items[CAMDD_TS_EFF_IOSIZE].entry->value_unsigned;
+ *max_blk= req_status_items[CAMDD_TS_MAX_BLK].entry->value_unsigned;
+ *min_blk= req_status_items[CAMDD_TS_MIN_BLK].entry->value_unsigned;
+ *blk_gran = req_status_items[CAMDD_TS_BLK_GRAN].entry->value_unsigned;
+bailout:
+
+ free(xml_str);
+ mt_status_free(&status_data);
+
+ return (retval);
+}
+
+struct camdd_dev *
+camdd_probe_file(int fd, struct camdd_io_opts *io_opts, int retry_count,
+ int timeout)
+{
+ struct camdd_dev *dev = NULL;
+ struct camdd_dev_file *file_dev;
+ uint64_t blocksize = io_opts->blocksize;
+
+ dev = camdd_alloc_dev(CAMDD_DEV_FILE, NULL, 0, retry_count, timeout);
+ if (dev == NULL)
+ goto bailout;
+
+ file_dev = &dev->dev_spec.file;
+ file_dev->fd = fd;
+ strlcpy(file_dev->filename, io_opts->dev_name,
+ sizeof(file_dev->filename));
+ strlcpy(dev->device_name, io_opts->dev_name, sizeof(dev->device_name));
+ if (blocksize == 0)
+ dev->blocksize = CAMDD_FILE_DEFAULT_BLOCK;
+ else
+ dev->blocksize = blocksize;
+
+ if ((io_opts->queue_depth != 0)
+ && (io_opts->queue_depth != 1)) {
+ warnx("Queue depth %ju for %s ignored, only 1 outstanding "
+ "command supported", (uintmax_t)io_opts->queue_depth,
+ io_opts->dev_name);
+ }
+ dev->target_queue_depth = CAMDD_FILE_DEFAULT_DEPTH;
+ dev->run = camdd_file_run;
+ dev->fetch = NULL;
+
+ /*
+ * We can effectively access files on byte boundaries. We'll reset
+ * this for devices like disks that can be accessed on sector
+ * boundaries.
+ */
+ dev->sector_size = 1;
+
+ if ((fd != STDIN_FILENO)
+ && (fd != STDOUT_FILENO)) {
+ int retval;
+
+ retval = fstat(fd, &file_dev->sb);
+ if (retval != 0) {
+ warn("Cannot stat %s", dev->device_name);
+ goto bailout_error;
+ }
+ if (S_ISREG(file_dev->sb.st_mode)) {
+ file_dev->file_type = CAMDD_FILE_REG;
+ } else if (S_ISCHR(file_dev->sb.st_mode)) {
+ int type;
+
+ if (ioctl(fd, FIODTYPE, &type) == -1)
+ err(1, "FIODTYPE ioctl failed on %s",
+ dev->device_name);
+ else {
+ if (type & D_TAPE)
+ file_dev->file_type = CAMDD_FILE_TAPE;
+ else if (type & D_DISK)
+ file_dev->file_type = CAMDD_FILE_DISK;
+ else if (type & D_MEM)
+ file_dev->file_type = CAMDD_FILE_MEM;
+ else if (type & D_TTY)
+ file_dev->file_type = CAMDD_FILE_TTY;
+ }
+ } else if (S_ISDIR(file_dev->sb.st_mode)) {
+ errx(1, "cannot operate on directory %s",
+ dev->device_name);
+ } else if (S_ISFIFO(file_dev->sb.st_mode)) {
+ file_dev->file_type = CAMDD_FILE_PIPE;
+ } else
+ errx(1, "Cannot determine file type for %s",
+ dev->device_name);
+
+ switch (file_dev->file_type) {
+ case CAMDD_FILE_REG:
+ if (file_dev->sb.st_size != 0)
+ dev->max_sector = file_dev->sb.st_size - 1;
+ else
+ dev->max_sector = 0;
+ file_dev->file_flags |= CAMDD_FF_CAN_SEEK;
+ break;
+ case CAMDD_FILE_TAPE: {
+ uint64_t max_iosize, max_blk, min_blk, blk_gran;
+ /*
+ * Check block limits and maximum effective iosize.
+ * Make sure the blocksize is within the block
+ * limits (and a multiple of the minimum blocksize)
+ * and that the blocksize is <= maximum effective
+ * iosize.
+ */
+ retval = camdd_probe_tape(fd, dev->device_name,
+ &max_iosize, &max_blk, &min_blk, &blk_gran);
+ if (retval != 0)
+ errx(1, "Unable to probe tape %s",
+ dev->device_name);
+
+ /*
+ * The blocksize needs to be <= the maximum
+ * effective I/O size of the tape device. Note
+ * that this also takes into account the maximum
+ * blocksize reported by READ BLOCK LIMITS.
+ */
+ if (dev->blocksize > max_iosize) {
+ warnx("Blocksize %u too big for %s, limiting "
+ "to %ju", dev->blocksize, dev->device_name,
+ max_iosize);
+ dev->blocksize = max_iosize;
+ }
+
+ /*
+ * The blocksize needs to be at least min_blk;
+ */
+ if (dev->blocksize < min_blk) {
+ warnx("Blocksize %u too small for %s, "
+ "increasing to %ju", dev->blocksize,
+ dev->device_name, min_blk);
+ dev->blocksize = min_blk;
+ }
+
+ /*
+ * And the blocksize needs to be a multiple of
+ * the block granularity.
+ */
+ if ((blk_gran != 0)
+ && (dev->blocksize % (1 << blk_gran))) {
+ warnx("Blocksize %u for %s not a multiple of "
+ "%d, adjusting to %d", dev->blocksize,
+ dev->device_name, (1 << blk_gran),
+ dev->blocksize & ~((1 << blk_gran) - 1));
+ dev->blocksize &= ~((1 << blk_gran) - 1);
+ }
+
+ if (dev->blocksize == 0) {
+ errx(1, "Unable to derive valid blocksize for "
+ "%s", dev->device_name);
+ }
+
+ /*
+ * For tape drives, set the sector size to the
+ * blocksize so that we make sure not to write
+ * less than the blocksize out to the drive.
+ */
+ dev->sector_size = dev->blocksize;
+ break;
+ }
+ case CAMDD_FILE_DISK: {
+ off_t media_size;
+ unsigned int sector_size;
+
+ file_dev->file_flags |= CAMDD_FF_CAN_SEEK;
+
+ if (ioctl(fd, DIOCGSECTORSIZE, §or_size) == -1) {
+ err(1, "DIOCGSECTORSIZE ioctl failed on %s",
+ dev->device_name);
+ }
+
+ if (sector_size == 0) {
+ errx(1, "DIOCGSECTORSIZE ioctl returned "
+ "invalid sector size %u for %s",
+ sector_size, dev->device_name);
+ }
+
+ if (ioctl(fd, DIOCGMEDIASIZE, &media_size) == -1) {
+ err(1, "DIOCGMEDIASIZE ioctl failed on %s",
+ dev->device_name);
+ }
+
+ if (media_size == 0) {
+ errx(1, "DIOCGMEDIASIZE ioctl returned "
+ "invalid media size %ju for %s",
+ (uintmax_t)media_size, dev->device_name);
+ }
+
+ if (dev->blocksize % sector_size) {
+ errx(1, "%s blocksize %u not a multiple of "
+ "sector size %u", dev->device_name,
+ dev->blocksize, sector_size);
+ }
+
+ dev->sector_size = sector_size;
+ dev->max_sector = (media_size / sector_size) - 1;
+ break;
+ }
+ case CAMDD_FILE_MEM:
+ file_dev->file_flags |= CAMDD_FF_CAN_SEEK;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if ((io_opts->offset != 0)
+ && ((file_dev->file_flags & CAMDD_FF_CAN_SEEK) == 0)) {
+ warnx("Offset %ju specified for %s, but we cannot seek on %s",
+ io_opts->offset, io_opts->dev_name, io_opts->dev_name);
+ goto bailout_error;
+ }
+#if 0
+ else if ((io_opts->offset != 0)
+ && ((io_opts->offset % dev->sector_size) != 0)) {
+ warnx("Offset %ju for %s is not a multiple of the "
+ "sector size %u", io_opts->offset,
+ io_opts->dev_name, dev->sector_size);
+ goto bailout_error;
+ } else {
+ dev->start_offset_bytes = io_opts->offset;
+ }
+#endif
+
+bailout:
+ return (dev);
+
+bailout_error:
+ camdd_free_dev(dev);
+ return (NULL);
+}
+
+/*
+ * Need to implement this. Do a basic probe:
+ * - Check the inquiry data, make sure we're talking to a device that we
+ * can reasonably expect to talk to -- direct, RBC, CD, WORM.
+ * - Send a test unit ready, make sure the device is available.
+ * - Get the capacity and block size.
+ */
+struct camdd_dev *
+camdd_probe_pass(struct cam_device *cam_dev, struct camdd_io_opts *io_opts,
+ camdd_argmask arglist, int probe_retry_count,
+ int probe_timeout, int io_retry_count, int io_timeout)
+{
+ union ccb *ccb;
+ uint64_t maxsector;
+ uint32_t cpi_maxio, max_iosize, pass_numblocks;
+ uint32_t block_len;
+ struct scsi_read_capacity_data rcap;
+ struct scsi_read_capacity_data_long rcaplong;
+ struct camdd_dev *dev;
+ struct camdd_dev_pass *pass_dev;
+ struct kevent ke;
+ int scsi_dev_type;
+
+ dev = NULL;
+
+ scsi_dev_type = SID_TYPE(&cam_dev->inq_data);
+ maxsector = 0;
+ block_len = 0;
+
+ /*
+ * For devices that support READ CAPACITY, we'll attempt to get the
+ * capacity. Otherwise, we really don't support tape or other
+ * devices via SCSI passthrough, so just return an error in that case.
+ */
+ switch (scsi_dev_type) {
+ case T_DIRECT:
+ case T_WORM:
+ case T_CDROM:
+ case T_OPTICAL:
+ case T_RBC:
+ break;
+ default:
+ errx(1, "Unsupported SCSI device type %d", scsi_dev_type);
+ break; /*NOTREACHED*/
+ }
+
+ ccb = cam_getccb(cam_dev);
+
+ if (ccb == NULL) {
+ warnx("%s: error allocating ccb", __func__);
+ goto bailout;
+ }
+
+ CCB_CLEAR_ALL_EXCEPT_HDR(&ccb->csio);
+
+ scsi_read_capacity(&ccb->csio,
+ /*retries*/ probe_retry_count,
+ /*cbfcnp*/ NULL,
+ /*tag_action*/ MSG_SIMPLE_Q_TAG,
+ &rcap,
+ SSD_FULL_SIZE,
+ /*timeout*/ probe_timeout ? probe_timeout : 5000);
+
+ /* Disable freezing the device queue */
+ ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
+
+ if (arglist & CAMDD_ARG_ERR_RECOVER)
+ ccb->ccb_h.flags |= CAM_PASS_ERR_RECOVER;
+
+ if (cam_send_ccb(cam_dev, ccb) < 0) {
+ warn("error sending READ CAPACITY command");
+
+ cam_error_print(cam_dev, ccb, CAM_ESF_ALL,
+ CAM_EPF_ALL, stderr);
+
+ goto bailout;
+ }
+
+ if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
+ cam_error_print(cam_dev, ccb, CAM_ESF_ALL, CAM_EPF_ALL, stderr);
+ goto bailout;
+ }
+
+ maxsector = scsi_4btoul(rcap.addr);
+ block_len = scsi_4btoul(rcap.length);
+
+ /*
+ * A last block of 2^32-1 means that the true capacity is over 2TB,
+ * and we need to issue the long READ CAPACITY to get the real
+ * capacity. Otherwise, we're all set.
+ */
+ if (maxsector != 0xffffffff)
+ goto rcap_done;
+
+ scsi_read_capacity_16(&ccb->csio,
+ /*retries*/ probe_retry_count,
+ /*cbfcnp*/ NULL,
+ /*tag_action*/ MSG_SIMPLE_Q_TAG,
+ /*lba*/ 0,
+ /*reladdr*/ 0,
+ /*pmi*/ 0,
+ (uint8_t *)&rcaplong,
+ sizeof(rcaplong),
+ /*sense_len*/ SSD_FULL_SIZE,
+ /*timeout*/ probe_timeout ? probe_timeout : 5000);
+
+ /* Disable freezing the device queue */
+ ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
+
+ if (arglist & CAMDD_ARG_ERR_RECOVER)
+ ccb->ccb_h.flags |= CAM_PASS_ERR_RECOVER;
+
+ if (cam_send_ccb(cam_dev, ccb) < 0) {
+ warn("error sending READ CAPACITY (16) command");
+ cam_error_print(cam_dev, ccb, CAM_ESF_ALL,
+ CAM_EPF_ALL, stderr);
+ goto bailout;
+ }
+
+ if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
+ cam_error_print(cam_dev, ccb, CAM_ESF_ALL, CAM_EPF_ALL, stderr);
+ goto bailout;
+ }
+
+ maxsector = scsi_8btou64(rcaplong.addr);
+ block_len = scsi_4btoul(rcaplong.length);
+
+rcap_done:
+ if (block_len == 0) {
+ warnx("Sector size for %s%u is 0, cannot continue",
+ cam_dev->device_name, cam_dev->dev_unit_num);
+ goto bailout_error;
+ }
+
+ CCB_CLEAR_ALL_EXCEPT_HDR(&ccb->cpi);
+
+ ccb->ccb_h.func_code = XPT_PATH_INQ;
+ ccb->ccb_h.flags = CAM_DIR_NONE;
+ ccb->ccb_h.retry_count = 1;
+
+ if (cam_send_ccb(cam_dev, ccb) < 0) {
+ warn("error sending XPT_PATH_INQ CCB");
+
+ cam_error_print(cam_dev, ccb, CAM_ESF_ALL,
+ CAM_EPF_ALL, stderr);
+ goto bailout;
+ }
+
+ EV_SET(&ke, cam_dev->fd, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
+
+ dev = camdd_alloc_dev(CAMDD_DEV_PASS, &ke, 1, io_retry_count,
+ io_timeout);
+ if (dev == NULL)
+ goto bailout;
+
+ pass_dev = &dev->dev_spec.pass;
+ pass_dev->scsi_dev_type = scsi_dev_type;
+ pass_dev->dev = cam_dev;
+ pass_dev->max_sector = maxsector;
+ pass_dev->block_len = block_len;
+ pass_dev->cpi_maxio = ccb->cpi.maxio;
+ snprintf(dev->device_name, sizeof(dev->device_name), "%s%u",
+ pass_dev->dev->device_name, pass_dev->dev->dev_unit_num);
+ dev->sector_size = block_len;
+ dev->max_sector = maxsector;
+
+
+ /*
+ * Determine the optimal blocksize to use for this device.
+ */
+
+ /*
+ * If the controller has not specified a maximum I/O size,
+ * just go with 128K as a somewhat conservative value.
+ */
+ if (pass_dev->cpi_maxio == 0)
+ cpi_maxio = 131072;
+ else
+ cpi_maxio = pass_dev->cpi_maxio;
+
+ /*
+ * If the controller has a large maximum I/O size, limit it
+ * to something smaller so that the kernel doesn't have trouble
+ * allocating buffers to copy data in and out for us.
+ * XXX KDM this is until we have unmapped I/O support in the kernel.
+ */
+ max_iosize = min(cpi_maxio, CAMDD_PASS_MAX_BLOCK);
+
+ /*
+ * If we weren't able to get a block size for some reason,
+ * default to 512 bytes.
+ */
+ block_len = pass_dev->block_len;
+ if (block_len == 0)
+ block_len = 512;
+
+ /*
+ * Figure out how many blocksize chunks will fit in the
+ * maximum I/O size.
+ */
+ pass_numblocks = max_iosize / block_len;
+
+ /*
+ * And finally, multiple the number of blocks by the LBA
+ * length to get our maximum block size;
+ */
+ dev->blocksize = pass_numblocks * block_len;
+
+ if (io_opts->blocksize != 0) {
+ if ((io_opts->blocksize % dev->sector_size) != 0) {
+ warnx("Blocksize %ju for %s is not a multiple of "
+ "sector size %u", (uintmax_t)io_opts->blocksize,
+ dev->device_name, dev->sector_size);
+ goto bailout_error;
+ }
+ dev->blocksize = io_opts->blocksize;
+ }
+ dev->target_queue_depth = CAMDD_PASS_DEFAULT_DEPTH;
+ if (io_opts->queue_depth != 0)
+ dev->target_queue_depth = io_opts->queue_depth;
+
+ if (io_opts->offset != 0) {
+ if (io_opts->offset > (dev->max_sector * dev->sector_size)) {
+ warnx("Offset %ju is past the end of device %s",
+ io_opts->offset, dev->device_name);
+ goto bailout_error;
+ }
+#if 0
+ else if ((io_opts->offset % dev->sector_size) != 0) {
+ warnx("Offset %ju for %s is not a multiple of the "
+ "sector size %u", io_opts->offset,
+ dev->device_name, dev->sector_size);
+ goto bailout_error;
+ }
+ dev->start_offset_bytes = io_opts->offset;
+#endif
+ }
+
+ dev->min_cmd_size = io_opts->min_cmd_size;
+
+ dev->run = camdd_pass_run;
+ dev->fetch = camdd_pass_fetch;
+
+bailout:
+ cam_freeccb(ccb);
+
+ return (dev);
+
+bailout_error:
+ cam_freeccb(ccb);
+
+ camdd_free_dev(dev);
+
+ return (NULL);
+}
+
+void *
+camdd_worker(void *arg)
+{
+ struct camdd_dev *dev = arg;
+ struct camdd_buf *buf;
+ struct timespec ts, *kq_ts;
+
+ ts.tv_sec = 0;
+ ts.tv_nsec = 0;
+
+ pthread_mutex_lock(&dev->mutex);
+
+ dev->flags |= CAMDD_DEV_FLAG_ACTIVE;
+
+ for (;;) {
+ struct kevent ke;
+ int retval = 0;
+
+ /*
+ * XXX KDM check the reorder queue depth?
+ */
+ if (dev->write_dev == 0) {
+ uint32_t our_depth, peer_depth, peer_bytes, our_bytes;
+ uint32_t target_depth = dev->target_queue_depth;
+ uint32_t peer_target_depth =
+ dev->peer_dev->target_queue_depth;
+ uint32_t peer_blocksize = dev->peer_dev->blocksize;
+
+ camdd_get_depth(dev, &our_depth, &peer_depth,
+ &our_bytes, &peer_bytes);
+
+#if 0
+ while (((our_depth < target_depth)
+ && (peer_depth < peer_target_depth))
+ || ((peer_bytes + our_bytes) <
+ (peer_blocksize * 2))) {
+#endif
+ while (((our_depth + peer_depth) <
+ (target_depth + peer_target_depth))
+ || ((peer_bytes + our_bytes) <
+ (peer_blocksize * 3))) {
+
+ retval = camdd_queue(dev, NULL);
+ if (retval == 1)
+ break;
+ else if (retval != 0) {
+ error_exit = 1;
+ goto bailout;
+ }
+
+ camdd_get_depth(dev, &our_depth, &peer_depth,
+ &our_bytes, &peer_bytes);
+ }
+ }
+ /*
+ * See if we have any I/O that is ready to execute.
+ */
+ buf = STAILQ_FIRST(&dev->run_queue);
+ if (buf != NULL) {
+ while (dev->target_queue_depth > dev->cur_active_io) {
+ retval = dev->run(dev);
+ if (retval == -1) {
+ dev->flags |= CAMDD_DEV_FLAG_EOF;
+ error_exit = 1;
+ break;
+ } else if (retval != 0) {
+ break;
+ }
+ }
+ }
+
+ /*
+ * We've reached EOF, or our partner has reached EOF.
+ */
+ if ((dev->flags & CAMDD_DEV_FLAG_EOF)
+ || (dev->flags & CAMDD_DEV_FLAG_PEER_EOF)) {
+ if (dev->write_dev != 0) {
+ if ((STAILQ_EMPTY(&dev->work_queue))
+ && (dev->num_run_queue == 0)
+ && (dev->cur_active_io == 0)) {
+ goto bailout;
+ }
+ } else {
+ /*
+ * If we're the reader, and the writer
+ * got EOF, he is already done. If we got
+ * the EOF, then we need to wait until
+ * everything is flushed out for the writer.
+ */
+ if (dev->flags & CAMDD_DEV_FLAG_PEER_EOF) {
+ goto bailout;
+ } else if ((dev->num_peer_work_queue == 0)
+ && (dev->num_peer_done_queue == 0)
+ && (dev->cur_active_io == 0)
+ && (dev->num_run_queue == 0)) {
+ goto bailout;
+ }
+ }
+ /*
+ * XXX KDM need to do something about the pending
+ * queue and cleanup resources.
+ */
+ }
+
+ if ((dev->write_dev == 0)
+ && (dev->cur_active_io == 0)
+ && (dev->peer_bytes_queued < dev->peer_dev->blocksize))
+ kq_ts = &ts;
+ else
+ kq_ts = NULL;
+
+ /*
+ * Run kevent to see if there are events to process.
+ */
+ pthread_mutex_unlock(&dev->mutex);
+ retval = kevent(dev->kq, NULL, 0, &ke, 1, kq_ts);
+ pthread_mutex_lock(&dev->mutex);
+ if (retval == -1) {
+ warn("%s: error returned from kevent",__func__);
+ goto bailout;
+ } else if (retval != 0) {
+ switch (ke.filter) {
+ case EVFILT_READ:
+ if (dev->fetch != NULL) {
+ retval = dev->fetch(dev);
+ if (retval == -1) {
+ error_exit = 1;
+ goto bailout;
+ }
+ }
+ break;
+ case EVFILT_SIGNAL:
+ /*
+ * We register for this so we don't get
+ * an error as a result of a SIGINFO or a
+ * SIGINT. It will actually get handled
+ * by the signal handler. If we get a
+ * SIGINT, bail out without printing an
+ * error message. Any other signals
+ * will result in the error message above.
+ */
+ if (ke.ident == SIGINT)
+ goto bailout;
+ break;
+ case EVFILT_USER:
+ retval = 0;
+ /*
+ * Check to see if the other thread has
+ * queued any I/O for us to do. (In this
+ * case we're the writer.)
+ */
+ for (buf = STAILQ_FIRST(&dev->work_queue);
+ buf != NULL;
+ buf = STAILQ_FIRST(&dev->work_queue)) {
+ STAILQ_REMOVE_HEAD(&dev->work_queue,
+ work_links);
+ retval = camdd_queue(dev, buf);
+ /*
+ * We keep going unless we get an
+ * actual error. If we get EOF, we
+ * still want to remove the buffers
+ * from the queue and send the back
+ * to the reader thread.
+ */
+ if (retval == -1) {
+ error_exit = 1;
+ goto bailout;
+ } else
+ retval = 0;
+ }
+
+ /*
+ * Next check to see if the other thread has
+ * queued any completed buffers back to us.
+ * (In this case we're the reader.)
+ */
+ for (buf = STAILQ_FIRST(&dev->peer_done_queue);
+ buf != NULL;
+ buf = STAILQ_FIRST(&dev->peer_done_queue)){
+ STAILQ_REMOVE_HEAD(
+ &dev->peer_done_queue, work_links);
+ dev->num_peer_done_queue--;
+ camdd_peer_done(buf);
+ }
+ break;
+ default:
+ warnx("%s: unknown kevent filter %d",
+ __func__, ke.filter);
+ break;
+ }
+ }
+ }
+
+bailout:
+
+ dev->flags &= ~CAMDD_DEV_FLAG_ACTIVE;
+
+ /* XXX KDM cleanup resources here? */
+
+ pthread_mutex_unlock(&dev->mutex);
+
+ need_exit = 1;
+ sem_post(&camdd_sem);
+
+ return (NULL);
+}
+
+/*
+ * Simplistic translation of CCB status to our local status.
+ */
+camdd_buf_status
+camdd_ccb_status(union ccb *ccb)
+{
+ camdd_buf_status status = CAMDD_STATUS_NONE;
+ cam_status ccb_status;
+
+ ccb_status = ccb->ccb_h.status & CAM_STATUS_MASK;
+
+ switch (ccb_status) {
+ case CAM_REQ_CMP: {
+ if (ccb->csio.resid == 0) {
+ status = CAMDD_STATUS_OK;
+ } else if (ccb->csio.dxfer_len > ccb->csio.resid) {
+ status = CAMDD_STATUS_SHORT_IO;
+ } else {
+ status = CAMDD_STATUS_EOF;
+ }
+ break;
+ }
+ case CAM_SCSI_STATUS_ERROR: {
+ switch (ccb->csio.scsi_status) {
+ case SCSI_STATUS_OK:
+ case SCSI_STATUS_COND_MET:
+ case SCSI_STATUS_INTERMED:
+ case SCSI_STATUS_INTERMED_COND_MET:
+ status = CAMDD_STATUS_OK;
+ break;
+ case SCSI_STATUS_CMD_TERMINATED:
+ case SCSI_STATUS_CHECK_COND:
+ case SCSI_STATUS_QUEUE_FULL:
+ case SCSI_STATUS_BUSY:
+ case SCSI_STATUS_RESERV_CONFLICT:
+ default:
+ status = CAMDD_STATUS_ERROR;
+ break;
+ }
+ break;
+ }
+ default:
+ status = CAMDD_STATUS_ERROR;
+ break;
+ }
+
+ return (status);
+}
+
+/*
+ * Queue a buffer to our peer's work thread for writing.
+ *
+ * Returns 0 for success, -1 for failure, 1 if the other thread exited.
+ */
+int
+camdd_queue_peer_buf(struct camdd_dev *dev, struct camdd_buf *buf)
+{
+ struct kevent ke;
+ STAILQ_HEAD(, camdd_buf) local_queue;
+ struct camdd_buf *buf1, *buf2;
+ struct camdd_buf_data *data = NULL;
+ uint64_t peer_bytes_queued = 0;
+ int active = 1;
+ int retval = 0;
+
+ STAILQ_INIT(&local_queue);
+
+ /*
+ * Since we're the reader, we need to queue our I/O to the writer
+ * in sequential order in order to make sure it gets written out
+ * in sequential order.
+ *
+ * Check the next expected I/O starting offset. If this doesn't
+ * match, put it on the reorder queue.
+ */
+ if ((buf->lba * dev->sector_size) != dev->next_completion_pos_bytes) {
+
+ /*
+ * If there is nothing on the queue, there is no sorting
+ * needed.
+ */
+ if (STAILQ_EMPTY(&dev->reorder_queue)) {
+ STAILQ_INSERT_TAIL(&dev->reorder_queue, buf, links);
+ dev->num_reorder_queue++;
+ goto bailout;
+ }
+
+ /*
+ * Sort in ascending order by starting LBA. There should
+ * be no identical LBAs.
+ */
+ for (buf1 = STAILQ_FIRST(&dev->reorder_queue); buf1 != NULL;
+ buf1 = buf2) {
+ buf2 = STAILQ_NEXT(buf1, links);
+ if (buf->lba < buf1->lba) {
+ /*
+ * If we're less than the first one, then
+ * we insert at the head of the list
+ * because this has to be the first element
+ * on the list.
+ */
+ STAILQ_INSERT_HEAD(&dev->reorder_queue,
+ buf, links);
+ dev->num_reorder_queue++;
+ break;
+ } else if (buf->lba > buf1->lba) {
+ if (buf2 == NULL) {
+ STAILQ_INSERT_TAIL(&dev->reorder_queue,
+ buf, links);
+ dev->num_reorder_queue++;
+ break;
+ } else if (buf->lba < buf2->lba) {
+ STAILQ_INSERT_AFTER(&dev->reorder_queue,
+ buf1, buf, links);
+ dev->num_reorder_queue++;
+ break;
+ }
+ } else {
+ errx(1, "Found buffers with duplicate LBA %ju!",
+ buf->lba);
+ }
+ }
+ goto bailout;
+ } else {
+
+ /*
+ * We're the next expected I/O completion, so put ourselves
+ * on the local queue to be sent to the writer. We use
+ * work_links here so that we can queue this to the
+ * peer_work_queue before taking the buffer off of the
+ * local_queue.
+ */
+ dev->next_completion_pos_bytes += buf->len;
+ STAILQ_INSERT_TAIL(&local_queue, buf, work_links);
+
+ /*
+ * Go through the reorder queue looking for more sequential
+ * I/O and add it to the local queue.
+ */
+ for (buf1 = STAILQ_FIRST(&dev->reorder_queue); buf1 != NULL;
+ buf1 = STAILQ_FIRST(&dev->reorder_queue)) {
+ /*
+ * As soon as we see an I/O that is out of sequence,
+ * we're done.
+ */
+ if ((buf1->lba * dev->sector_size) !=
+ dev->next_completion_pos_bytes)
+ break;
+
+ STAILQ_REMOVE_HEAD(&dev->reorder_queue, links);
+ dev->num_reorder_queue--;
+ STAILQ_INSERT_TAIL(&local_queue, buf1, work_links);
+ dev->next_completion_pos_bytes += buf1->len;
+ }
+ }
+
+ /*
+ * Setup the event to let the other thread know that it has work
+ * pending.
+ */
+ EV_SET(&ke, (uintptr_t)&dev->peer_dev->work_queue, EVFILT_USER, 0,
+ NOTE_TRIGGER, 0, NULL);
+
+ /*
+ * Put this on our shadow queue so that we know what we've queued
+ * to the other thread.
+ */
+ STAILQ_FOREACH_SAFE(buf1, &local_queue, work_links, buf2) {
+ if (buf1->buf_type != CAMDD_BUF_DATA) {
+ errx(1, "%s: should have a data buffer, not an "
+ "indirect buffer", __func__);
+ }
+ data = &buf1->buf_type_spec.data;
+
+ /*
+ * We only need to send one EOF to the writer, and don't
+ * need to continue sending EOFs after that.
+ */
+ if (buf1->status == CAMDD_STATUS_EOF) {
+ if (dev->flags & CAMDD_DEV_FLAG_EOF_SENT) {
+ STAILQ_REMOVE(&local_queue, buf1, camdd_buf,
+ work_links);
+ camdd_release_buf(buf1);
+ retval = 1;
+ continue;
+ }
+ dev->flags |= CAMDD_DEV_FLAG_EOF_SENT;
+ }
+
+
+ STAILQ_INSERT_TAIL(&dev->peer_work_queue, buf1, links);
+ peer_bytes_queued += (data->fill_len - data->resid);
+ dev->peer_bytes_queued += (data->fill_len - data->resid);
+ dev->num_peer_work_queue++;
+ }
+
+ if (STAILQ_FIRST(&local_queue) == NULL)
+ goto bailout;
+
+ /*
+ * Drop our mutex and pick up the other thread's mutex. We need to
+ * do this to avoid deadlocks.
+ */
+ pthread_mutex_unlock(&dev->mutex);
+ pthread_mutex_lock(&dev->peer_dev->mutex);
+
+ if (dev->peer_dev->flags & CAMDD_DEV_FLAG_ACTIVE) {
+ /*
+ * Put the buffers on the other thread's incoming work queue.
+ */
+ for (buf1 = STAILQ_FIRST(&local_queue); buf1 != NULL;
+ buf1 = STAILQ_FIRST(&local_queue)) {
+ STAILQ_REMOVE_HEAD(&local_queue, work_links);
+ STAILQ_INSERT_TAIL(&dev->peer_dev->work_queue, buf1,
+ work_links);
+ }
+ /*
+ * Send an event to the other thread's kqueue to let it know
+ * that there is something on the work queue.
+ */
+ retval = kevent(dev->peer_dev->kq, &ke, 1, NULL, 0, NULL);
+ if (retval == -1)
+ warn("%s: unable to add peer work_queue kevent",
+ __func__);
+ else
+ retval = 0;
+ } else
+ active = 0;
+
+ pthread_mutex_unlock(&dev->peer_dev->mutex);
+ pthread_mutex_lock(&dev->mutex);
+
+ /*
+ * If the other side isn't active, run through the queue and
+ * release all of the buffers.
+ */
+ if (active == 0) {
+ for (buf1 = STAILQ_FIRST(&local_queue); buf1 != NULL;
+ buf1 = STAILQ_FIRST(&local_queue)) {
+ STAILQ_REMOVE_HEAD(&local_queue, work_links);
+ STAILQ_REMOVE(&dev->peer_work_queue, buf1, camdd_buf,
+ links);
+ dev->num_peer_work_queue--;
+ camdd_release_buf(buf1);
+ }
+ dev->peer_bytes_queued -= peer_bytes_queued;
+ retval = 1;
+ }
+
+bailout:
+ return (retval);
+}
+
+/*
+ * Return a buffer to the reader thread when we have completed writing it.
+ */
+int
+camdd_complete_peer_buf(struct camdd_dev *dev, struct camdd_buf *peer_buf)
+{
+ struct kevent ke;
+ int retval = 0;
+
+ /*
+ * Setup the event to let the other thread know that we have
+ * completed a buffer.
+ */
+ EV_SET(&ke, (uintptr_t)&dev->peer_dev->peer_done_queue, EVFILT_USER, 0,
+ NOTE_TRIGGER, 0, NULL);
+
+ /*
+ * Drop our lock and acquire the other thread's lock before
+ * manipulating
+ */
+ pthread_mutex_unlock(&dev->mutex);
+ pthread_mutex_lock(&dev->peer_dev->mutex);
+
+ /*
+ * Put the buffer on the reader thread's peer done queue now that
+ * we have completed it.
+ */
+ STAILQ_INSERT_TAIL(&dev->peer_dev->peer_done_queue, peer_buf,
+ work_links);
+ dev->peer_dev->num_peer_done_queue++;
+
+ /*
+ * Send an event to the peer thread to let it know that we've added
+ * something to its peer done queue.
+ */
+ retval = kevent(dev->peer_dev->kq, &ke, 1, NULL, 0, NULL);
+ if (retval == -1)
+ warn("%s: unable to add peer_done_queue kevent", __func__);
+ else
+ retval = 0;
+
+ /*
+ * Drop the other thread's lock and reacquire ours.
+ */
+ pthread_mutex_unlock(&dev->peer_dev->mutex);
+ pthread_mutex_lock(&dev->mutex);
+
+ return (retval);
+}
+
+/*
+ * Free a buffer that was written out by the writer thread and returned to
+ * the reader thread.
+ */
+void
+camdd_peer_done(struct camdd_buf *buf)
+{
+ struct camdd_dev *dev;
+ struct camdd_buf_data *data;
+
+ dev = buf->dev;
+ if (buf->buf_type != CAMDD_BUF_DATA) {
+ errx(1, "%s: should have a data buffer, not an "
+ "indirect buffer", __func__);
+ }
+
+ data = &buf->buf_type_spec.data;
+
+ STAILQ_REMOVE(&dev->peer_work_queue, buf, camdd_buf, links);
+ dev->num_peer_work_queue--;
+ dev->peer_bytes_queued -= (data->fill_len - data->resid);
+
+ if (buf->status == CAMDD_STATUS_EOF)
+ dev->flags |= CAMDD_DEV_FLAG_PEER_EOF;
+
+ STAILQ_INSERT_TAIL(&dev->free_queue, buf, links);
+}
+
+/*
+ * Assumes caller holds the lock for this device.
+ */
+void
+camdd_complete_buf(struct camdd_dev *dev, struct camdd_buf *buf,
+ int *error_count)
+{
+ int retval = 0;
+
+ /*
+ * If we're the reader, we need to send the completed I/O
+ * to the writer. If we're the writer, we need to just
+ * free up resources, or let the reader know if we've
+ * encountered an error.
+ */
+ if (dev->write_dev == 0) {
+ retval = camdd_queue_peer_buf(dev, buf);
+ if (retval != 0)
+ (*error_count)++;
+ } else {
+ struct camdd_buf *tmp_buf, *next_buf;
+
+ STAILQ_FOREACH_SAFE(tmp_buf, &buf->src_list, src_links,
+ next_buf) {
+ struct camdd_buf *src_buf;
+ struct camdd_buf_indirect *indirect;
+
+ STAILQ_REMOVE(&buf->src_list, tmp_buf,
+ camdd_buf, src_links);
+
+ tmp_buf->status = buf->status;
+
+ if (tmp_buf->buf_type == CAMDD_BUF_DATA) {
+ camdd_complete_peer_buf(dev, tmp_buf);
+ continue;
+ }
+
+ indirect = &tmp_buf->buf_type_spec.indirect;
+ src_buf = indirect->src_buf;
+ src_buf->refcount--;
+ /*
+ * XXX KDM we probably need to account for
+ * exactly how many bytes we were able to
+ * write. Allocate the residual to the
+ * first N buffers? Or just track the
+ * number of bytes written? Right now the reader
+ * doesn't do anything with a residual.
+ */
+ src_buf->status = buf->status;
+ if (src_buf->refcount <= 0)
+ camdd_complete_peer_buf(dev, src_buf);
+ STAILQ_INSERT_TAIL(&dev->free_indirect_queue,
+ tmp_buf, links);
+ }
+
+ STAILQ_INSERT_TAIL(&dev->free_queue, buf, links);
+ }
+}
+
+/*
+ * Fetch all completed commands from the pass(4) device.
+ *
+ * Returns the number of commands received, or -1 if any of the commands
+ * completed with an error. Returns 0 if no commands are available.
+ */
+int
+camdd_pass_fetch(struct camdd_dev *dev)
+{
+ struct camdd_dev_pass *pass_dev = &dev->dev_spec.pass;
+ union ccb ccb;
+ int retval = 0, num_fetched = 0, error_count = 0;
+
+ pthread_mutex_unlock(&dev->mutex);
+ /*
+ * XXX KDM we don't distinguish between EFAULT and ENOENT.
+ */
+ while ((retval = ioctl(pass_dev->dev->fd, CAMIOGET, &ccb)) != -1) {
+ struct camdd_buf *buf;
+ struct camdd_buf_data *data;
+ cam_status ccb_status;
+ union ccb *buf_ccb;
+
+ buf = ccb.ccb_h.ccb_buf;
+ data = &buf->buf_type_spec.data;
+ buf_ccb = &data->ccb;
+
+ num_fetched++;
+
+ /*
+ * Copy the CCB back out so we get status, sense data, etc.
+ */
+ bcopy(&ccb, buf_ccb, sizeof(ccb));
+
+ pthread_mutex_lock(&dev->mutex);
+
+ /*
+ * We're now done, so take this off the active queue.
+ */
+ STAILQ_REMOVE(&dev->active_queue, buf, camdd_buf, links);
+ dev->cur_active_io--;
+
+ ccb_status = ccb.ccb_h.status & CAM_STATUS_MASK;
+ if (ccb_status != CAM_REQ_CMP) {
+ cam_error_print(pass_dev->dev, &ccb, CAM_ESF_ALL,
+ CAM_EPF_ALL, stderr);
+ }
+
+ data->resid = ccb.csio.resid;
+ dev->bytes_transferred += (ccb.csio.dxfer_len - ccb.csio.resid);
+
+ if (buf->status == CAMDD_STATUS_NONE)
+ buf->status = camdd_ccb_status(&ccb);
+ if (buf->status == CAMDD_STATUS_ERROR)
+ error_count++;
+ else if (buf->status == CAMDD_STATUS_EOF) {
+ /*
+ * Once we queue this buffer to our partner thread,
+ * he will know that we've hit EOF.
+ */
+ dev->flags |= CAMDD_DEV_FLAG_EOF;
+ }
+
+ camdd_complete_buf(dev, buf, &error_count);
+
+ /*
+ * Unlock in preparation for the ioctl call.
+ */
+ pthread_mutex_unlock(&dev->mutex);
+ }
+
+ pthread_mutex_lock(&dev->mutex);
+
+ if (error_count > 0)
+ return (-1);
+ else
+ return (num_fetched);
+}
+
+/*
+ * Returns -1 for error, 0 for success/continue, and 1 for resource
+ * shortage/stop processing.
+ */
+int
+camdd_file_run(struct camdd_dev *dev)
+{
+ struct camdd_dev_file *file_dev = &dev->dev_spec.file;
+ struct camdd_buf_data *data;
+ struct camdd_buf *buf;
+ off_t io_offset;
+ int retval = 0, write_dev = dev->write_dev;
+ int error_count = 0, no_resources = 0, double_buf_needed = 0;
+ uint32_t num_sectors = 0, db_len = 0;
+
+ buf = STAILQ_FIRST(&dev->run_queue);
+ if (buf == NULL) {
+ no_resources = 1;
+ goto bailout;
+ } else if ((dev->write_dev == 0)
+ && (dev->flags & (CAMDD_DEV_FLAG_EOF |
+ CAMDD_DEV_FLAG_EOF_SENT))) {
+ STAILQ_REMOVE(&dev->run_queue, buf, camdd_buf, links);
+ dev->num_run_queue--;
+ buf->status = CAMDD_STATUS_EOF;
+ error_count++;
+ goto bailout;
+ }
+
+ /*
+ * If we're writing, we need to go through the source buffer list
+ * and create an S/G list.
+ */
+ if (write_dev != 0) {
+ retval = camdd_buf_sg_create(buf, /*iovec*/ 1,
+ dev->sector_size, &num_sectors, &double_buf_needed);
+ if (retval != 0) {
+ no_resources = 1;
+ goto bailout;
+ }
+ }
+
+ STAILQ_REMOVE(&dev->run_queue, buf, camdd_buf, links);
+ dev->num_run_queue--;
+
+ data = &buf->buf_type_spec.data;
+
+ /*
+ * pread(2) and pwrite(2) offsets are byte offsets.
+ */
+ io_offset = buf->lba * dev->sector_size;
+
+ /*
+ * Unlock the mutex while we read or write.
+ */
+ pthread_mutex_unlock(&dev->mutex);
+
+ /*
+ * Note that we don't need to double buffer if we're the reader
+ * because in that case, we have allocated a single buffer of
+ * sufficient size to do the read. This copy is necessary on
+ * writes because if one of the components of the S/G list is not
+ * a sector size multiple, the kernel will reject the write. This
+ * is unfortunate but not surprising. So this will make sure that
+ * we're using a single buffer that is a multiple of the sector size.
+ */
+ if ((double_buf_needed != 0)
+ && (data->sg_count > 1)
+ && (write_dev != 0)) {
+ uint32_t cur_offset;
+ int i;
+
+ if (file_dev->tmp_buf == NULL)
+ file_dev->tmp_buf = calloc(dev->blocksize, 1);
+ if (file_dev->tmp_buf == NULL) {
+ buf->status = CAMDD_STATUS_ERROR;
+ error_count++;
+ pthread_mutex_lock(&dev->mutex);
+ goto bailout;
+ }
+ for (i = 0, cur_offset = 0; i < data->sg_count; i++) {
+ bcopy(data->iovec[i].iov_base,
+ &file_dev->tmp_buf[cur_offset],
+ data->iovec[i].iov_len);
+ cur_offset += data->iovec[i].iov_len;
+ }
+ db_len = cur_offset;
+ }
+
+ if (file_dev->file_flags & CAMDD_FF_CAN_SEEK) {
+ if (write_dev == 0) {
+ /*
+ * XXX KDM is there any way we would need a S/G
+ * list here?
+ */
+ retval = pread(file_dev->fd, data->buf,
+ buf->len, io_offset);
+ } else {
+ if (double_buf_needed != 0) {
+ retval = pwrite(file_dev->fd, file_dev->tmp_buf,
+ db_len, io_offset);
+ } else if (data->sg_count == 0) {
+ retval = pwrite(file_dev->fd, data->buf,
+ data->fill_len, io_offset);
+ } else {
+ retval = pwritev(file_dev->fd, data->iovec,
+ data->sg_count, io_offset);
+ }
+ }
+ } else {
+ if (write_dev == 0) {
+ /*
+ * XXX KDM is there any way we would need a S/G
+ * list here?
+ */
+ retval = read(file_dev->fd, data->buf, buf->len);
+ } else {
+ if (double_buf_needed != 0) {
+ retval = write(file_dev->fd, file_dev->tmp_buf,
+ db_len);
+ } else if (data->sg_count == 0) {
+ retval = write(file_dev->fd, data->buf,
+ data->fill_len);
+ } else {
+ retval = writev(file_dev->fd, data->iovec,
+ data->sg_count);
+ }
+ }
+ }
+
+ /* We're done, re-acquire the lock */
+ pthread_mutex_lock(&dev->mutex);
+
+ if (retval >= (ssize_t)data->fill_len) {
+ /*
+ * If the bytes transferred is more than the request size,
+ * that indicates an overrun, which should only happen at
+ * the end of a transfer if we have to round up to a sector
+ * boundary.
+ */
+ if (buf->status == CAMDD_STATUS_NONE)
+ buf->status = CAMDD_STATUS_OK;
+ data->resid = 0;
+ dev->bytes_transferred += retval;
+ } else if (retval == -1) {
+ warn("Error %s %s", (write_dev) ? "writing to" :
+ "reading from", file_dev->filename);
+
+ buf->status = CAMDD_STATUS_ERROR;
+ data->resid = data->fill_len;
+ error_count++;
+
+ if (dev->debug == 0)
+ goto bailout;
+
+ if ((double_buf_needed != 0)
+ && (write_dev != 0)) {
+ fprintf(stderr, "%s: fd %d, DB buf %p, len %u lba %ju "
+ "offset %ju\n", __func__, file_dev->fd,
+ file_dev->tmp_buf, db_len, (uintmax_t)buf->lba,
+ (uintmax_t)io_offset);
+ } else if (data->sg_count == 0) {
+ fprintf(stderr, "%s: fd %d, buf %p, len %u, lba %ju "
+ "offset %ju\n", __func__, file_dev->fd, data->buf,
+ data->fill_len, (uintmax_t)buf->lba,
+ (uintmax_t)io_offset);
+ } else {
+ int i;
+
+ fprintf(stderr, "%s: fd %d, len %u, lba %ju "
+ "offset %ju\n", __func__, file_dev->fd,
+ data->fill_len, (uintmax_t)buf->lba,
+ (uintmax_t)io_offset);
+
+ for (i = 0; i < data->sg_count; i++) {
+ fprintf(stderr, "index %d ptr %p len %zu\n",
+ i, data->iovec[i].iov_base,
+ data->iovec[i].iov_len);
+ }
+ }
+ } else if (retval == 0) {
+ buf->status = CAMDD_STATUS_EOF;
+ if (dev->debug != 0)
+ printf("%s: got EOF from %s!\n", __func__,
+ file_dev->filename);
+ data->resid = data->fill_len;
+ error_count++;
+ } else if (retval < (ssize_t)data->fill_len) {
+ if (buf->status == CAMDD_STATUS_NONE)
+ buf->status = CAMDD_STATUS_SHORT_IO;
+ data->resid = data->fill_len - retval;
+ dev->bytes_transferred += retval;
+ }
+
+bailout:
+ if (buf != NULL) {
+ if (buf->status == CAMDD_STATUS_EOF) {
+ struct camdd_buf *buf2;
+ dev->flags |= CAMDD_DEV_FLAG_EOF;
+ STAILQ_FOREACH(buf2, &dev->run_queue, links)
+ buf2->status = CAMDD_STATUS_EOF;
+ }
+
+ camdd_complete_buf(dev, buf, &error_count);
+ }
+
+ if (error_count != 0)
+ return (-1);
+ else if (no_resources != 0)
+ return (1);
+ else
+ return (0);
+}
+
+/*
+ * Execute one command from the run queue. Returns 0 for success, 1 for
+ * stop processing, and -1 for error.
+ */
+int
+camdd_pass_run(struct camdd_dev *dev)
+{
+ struct camdd_buf *buf = NULL;
+ struct camdd_dev_pass *pass_dev = &dev->dev_spec.pass;
+ struct camdd_buf_data *data;
+ uint32_t num_blocks, sectors_used = 0;
+ union ccb *ccb;
+ int retval = 0, is_write = dev->write_dev;
+ int double_buf_needed = 0;
+
+ buf = STAILQ_FIRST(&dev->run_queue);
+ if (buf == NULL) {
+ retval = 1;
+ goto bailout;
+ }
+
+ /*
+ * If we're writing, we need to go through the source buffer list
+ * and create an S/G list.
+ */
+ if (is_write != 0) {
+ retval = camdd_buf_sg_create(buf, /*iovec*/ 0,dev->sector_size,
+ §ors_used, &double_buf_needed);
+ if (retval != 0) {
+ retval = -1;
+ goto bailout;
+ }
+ }
+
+ STAILQ_REMOVE(&dev->run_queue, buf, camdd_buf, links);
+ dev->num_run_queue--;
+
+ data = &buf->buf_type_spec.data;
+
+ ccb = &data->ccb;
+ CCB_CLEAR_ALL_EXCEPT_HDR(&ccb->csio);
+
+ /*
+ * In almost every case the number of blocks should be the device
+ * block size. The exception may be at the end of an I/O stream
+ * for a partial block or at the end of a device.
+ */
+ if (is_write != 0)
+ num_blocks = sectors_used;
+ else
+ num_blocks = data->fill_len / pass_dev->block_len;
+
+ scsi_read_write(&ccb->csio,
+ /*retries*/ dev->retry_count,
+ /*cbfcnp*/ NULL,
+ /*tag_action*/ MSG_SIMPLE_Q_TAG,
+ /*readop*/ (dev->write_dev == 0) ? SCSI_RW_READ :
+ SCSI_RW_WRITE,
+ /*byte2*/ 0,
+ /*minimum_cmd_size*/ dev->min_cmd_size,
+ /*lba*/ buf->lba,
+ /*block_count*/ num_blocks,
+ /*data_ptr*/ (data->sg_count != 0) ?
+ (uint8_t *)data->segs : data->buf,
+ /*dxfer_len*/ (num_blocks * pass_dev->block_len),
+ /*sense_len*/ SSD_FULL_SIZE,
+ /*timeout*/ dev->io_timeout);
+
+ /* Disable freezing the device queue */
+ ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
+
+ if (dev->retry_count != 0)
+ ccb->ccb_h.flags |= CAM_PASS_ERR_RECOVER;
+
+ if (data->sg_count != 0) {
+ ccb->csio.sglist_cnt = data->sg_count;
+ ccb->ccb_h.flags |= CAM_DATA_SG;
+ }
+
+ /*
+ * Store a pointer to the buffer in the CCB. The kernel will
+ * restore this when we get it back, and we'll use it to identify
+ * the buffer this CCB came from.
+ */
+ ccb->ccb_h.ccb_buf = buf;
+
+ /*
+ * Unlock our mutex in preparation for issuing the ioctl.
+ */
+ pthread_mutex_unlock(&dev->mutex);
+ /*
+ * Queue the CCB to the pass(4) driver.
+ */
+ if (ioctl(pass_dev->dev->fd, CAMIOQUEUE, ccb) == -1) {
+ pthread_mutex_lock(&dev->mutex);
+
+ warn("%s: error sending CAMIOQUEUE ioctl to %s%u", __func__,
+ pass_dev->dev->device_name, pass_dev->dev->dev_unit_num);
+ warn("%s: CCB address is %p", __func__, ccb);
+ retval = -1;
+
+ STAILQ_INSERT_TAIL(&dev->free_queue, buf, links);
+ } else {
+ pthread_mutex_lock(&dev->mutex);
+
+ dev->cur_active_io++;
+ STAILQ_INSERT_TAIL(&dev->active_queue, buf, links);
+ }
+
+bailout:
+ return (retval);
+}
+
+int
+camdd_get_next_lba_len(struct camdd_dev *dev, uint64_t *lba, ssize_t *len)
+{
+ struct camdd_dev_pass *pass_dev;
+ uint32_t num_blocks;
+ int retval = 0;
+
+ pass_dev = &dev->dev_spec.pass;
+
+ *lba = dev->next_io_pos_bytes / dev->sector_size;
+ *len = dev->blocksize;
+ num_blocks = *len / dev->sector_size;
+
+ /*
+ * If max_sector is 0, then we have no set limit. This can happen
+ * if we're writing to a file in a filesystem, or reading from
+ * something like /dev/zero.
+ */
+ if ((dev->max_sector != 0)
+ || (dev->sector_io_limit != 0)) {
+ uint64_t max_sector;
+
+ if ((dev->max_sector != 0)
+ && (dev->sector_io_limit != 0))
+ max_sector = min(dev->sector_io_limit, dev->max_sector);
+ else if (dev->max_sector != 0)
+ max_sector = dev->max_sector;
+ else
+ max_sector = dev->sector_io_limit;
+
+
+ /*
+ * Check to see whether we're starting off past the end of
+ * the device. If so, we need to just send an EOF
+ * notification to the writer.
+ */
+ if (*lba > max_sector) {
+ *len = 0;
+ retval = 1;
+ } else if (((*lba + num_blocks) > max_sector + 1)
+ || ((*lba + num_blocks) < *lba)) {
+ /*
+ * If we get here (but pass the first check), we
+ * can trim the request length down to go to the
+ * end of the device.
+ */
+ num_blocks = (max_sector + 1) - *lba;
+ *len = num_blocks * dev->sector_size;
+ retval = 1;
+ }
+ }
+
+ dev->next_io_pos_bytes += *len;
+
+ return (retval);
+}
+
+/*
+ * Returns 0 for success, 1 for EOF detected, and -1 for failure.
+ */
+int
+camdd_queue(struct camdd_dev *dev, struct camdd_buf *read_buf)
+{
+ struct camdd_buf *buf = NULL;
+ struct camdd_buf_data *data;
+ struct camdd_dev_pass *pass_dev;
+ size_t new_len;
+ struct camdd_buf_data *rb_data;
+ int is_write = dev->write_dev;
+ int eof_flush_needed = 0;
+ int retval = 0;
+ int error;
+
+ pass_dev = &dev->dev_spec.pass;
+
+ /*
+ * If we've gotten EOF or our partner has, we should not continue
+ * queueing I/O. If we're a writer, though, we should continue
+ * to write any buffers that don't have EOF status.
+ */
+ if ((dev->flags & CAMDD_DEV_FLAG_EOF)
+ || ((dev->flags & CAMDD_DEV_FLAG_PEER_EOF)
+ && (is_write == 0))) {
+ /*
+ * Tell the worker thread that we have seen EOF.
+ */
+ retval = 1;
+
+ /*
+ * If we're the writer, send the buffer back with EOF status.
+ */
+ if (is_write) {
+ read_buf->status = CAMDD_STATUS_EOF;
+
+ error = camdd_complete_peer_buf(dev, read_buf);
+ }
+ goto bailout;
+ }
+
+ if (is_write == 0) {
+ buf = camdd_get_buf(dev, CAMDD_BUF_DATA);
+ if (buf == NULL) {
+ retval = -1;
+ goto bailout;
+ }
+ data = &buf->buf_type_spec.data;
+
+ retval = camdd_get_next_lba_len(dev, &buf->lba, &buf->len);
+ if (retval != 0) {
+ buf->status = CAMDD_STATUS_EOF;
+
+ if ((buf->len == 0)
+ && ((dev->flags & (CAMDD_DEV_FLAG_EOF_SENT |
+ CAMDD_DEV_FLAG_EOF_QUEUED)) != 0)) {
+ camdd_release_buf(buf);
+ goto bailout;
+ }
+ dev->flags |= CAMDD_DEV_FLAG_EOF_QUEUED;
+ }
+
+ data->fill_len = buf->len;
+ data->src_start_offset = buf->lba * dev->sector_size;
+
+ /*
+ * Put this on the run queue.
+ */
+ STAILQ_INSERT_TAIL(&dev->run_queue, buf, links);
+ dev->num_run_queue++;
+
+ /* We're done. */
+ goto bailout;
+ }
+
+ /*
+ * Check for new EOF status from the reader.
+ */
+ if ((read_buf->status == CAMDD_STATUS_EOF)
+ || (read_buf->status == CAMDD_STATUS_ERROR)) {
+ dev->flags |= CAMDD_DEV_FLAG_PEER_EOF;
+ if ((STAILQ_FIRST(&dev->pending_queue) == NULL)
+ && (read_buf->len == 0)) {
+ camdd_complete_peer_buf(dev, read_buf);
+ retval = 1;
+ goto bailout;
+ } else
+ eof_flush_needed = 1;
+ }
+
+ /*
+ * See if we have a buffer we're composing with pieces from our
+ * partner thread.
+ */
+ buf = STAILQ_FIRST(&dev->pending_queue);
+ if (buf == NULL) {
+ uint64_t lba;
+ ssize_t len;
+
+ retval = camdd_get_next_lba_len(dev, &lba, &len);
+ if (retval != 0) {
+ read_buf->status = CAMDD_STATUS_EOF;
+
+ if (len == 0) {
+ dev->flags |= CAMDD_DEV_FLAG_EOF;
+ error = camdd_complete_peer_buf(dev, read_buf);
+ goto bailout;
+ }
+ }
+
+ /*
+ * If we don't have a pending buffer, we need to grab a new
+ * one from the free list or allocate another one.
+ */
+ buf = camdd_get_buf(dev, CAMDD_BUF_DATA);
+ if (buf == NULL) {
+ retval = 1;
+ goto bailout;
+ }
+
+ buf->lba = lba;
+ buf->len = len;
+
+ STAILQ_INSERT_TAIL(&dev->pending_queue, buf, links);
+ dev->num_pending_queue++;
+ }
+
+ data = &buf->buf_type_spec.data;
+
+ rb_data = &read_buf->buf_type_spec.data;
+
+ if ((rb_data->src_start_offset != dev->next_peer_pos_bytes)
+ && (dev->debug != 0)) {
+ printf("%s: WARNING: reader offset %#jx != expected offset "
+ "%#jx\n", __func__, (uintmax_t)rb_data->src_start_offset,
+ (uintmax_t)dev->next_peer_pos_bytes);
+ }
+ dev->next_peer_pos_bytes = rb_data->src_start_offset +
+ (rb_data->fill_len - rb_data->resid);
+
+ new_len = (rb_data->fill_len - rb_data->resid) + data->fill_len;
+ if (new_len < buf->len) {
+ /*
+ * There are three cases here:
+ * 1. We need more data to fill up a block, so we put
+ * this I/O on the queue and wait for more I/O.
+ * 2. We have a pending buffer in the queue that is
+ * smaller than our blocksize, but we got an EOF. So we
+ * need to go ahead and flush the write out.
+ * 3. We got an error.
+ */
+
+ /*
+ * Increment our fill length.
+ */
+ data->fill_len += (rb_data->fill_len - rb_data->resid);
+
+ /*
+ * Add the new read buffer to the list for writing.
+ */
+ STAILQ_INSERT_TAIL(&buf->src_list, read_buf, src_links);
+
+ /* Increment the count */
+ buf->src_count++;
+
+ if (eof_flush_needed == 0) {
+ /*
+ * We need to exit, because we don't have enough
+ * data yet.
+ */
+ goto bailout;
+ } else {
+ /*
+ * Take the buffer off of the pending queue.
+ */
+ STAILQ_REMOVE(&dev->pending_queue, buf, camdd_buf,
+ links);
+ dev->num_pending_queue--;
+
+ /*
+ * If we need an EOF flush, but there is no data
+ * to flush, go ahead and return this buffer.
+ */
+ if (data->fill_len == 0) {
+ camdd_complete_buf(dev, buf, /*error_count*/0);
+ retval = 1;
+ goto bailout;
+ }
+
+ /*
+ * Put this on the next queue for execution.
+ */
+ STAILQ_INSERT_TAIL(&dev->run_queue, buf, links);
+ dev->num_run_queue++;
+ }
+ } else if (new_len == buf->len) {
+ /*
+ * We have enough data to completey fill one block,
+ * so we're ready to issue the I/O.
+ */
+
+ /*
+ * Take the buffer off of the pending queue.
+ */
+ STAILQ_REMOVE(&dev->pending_queue, buf, camdd_buf, links);
+ dev->num_pending_queue--;
+
+ /*
+ * Add the new read buffer to the list for writing.
+ */
+ STAILQ_INSERT_TAIL(&buf->src_list, read_buf, src_links);
+
+ /* Increment the count */
+ buf->src_count++;
+
+ /*
+ * Increment our fill length.
+ */
+ data->fill_len += (rb_data->fill_len - rb_data->resid);
+
+ /*
+ * Put this on the next queue for execution.
+ */
+ STAILQ_INSERT_TAIL(&dev->run_queue, buf, links);
+ dev->num_run_queue++;
+ } else {
+ struct camdd_buf *idb;
+ struct camdd_buf_indirect *indirect;
+ uint32_t len_to_go, cur_offset;
+
+
+ idb = camdd_get_buf(dev, CAMDD_BUF_INDIRECT);
+ if (idb == NULL) {
+ retval = 1;
+ goto bailout;
+ }
+ indirect = &idb->buf_type_spec.indirect;
+ indirect->src_buf = read_buf;
+ read_buf->refcount++;
+ indirect->offset = 0;
+ indirect->start_ptr = rb_data->buf;
+ /*
+ * We've already established that there is more
+ * data in read_buf than we have room for in our
+ * current write request. So this particular chunk
+ * of the request should just be the remainder
+ * needed to fill up a block.
+ */
+ indirect->len = buf->len - (data->fill_len - data->resid);
+
+ camdd_buf_add_child(buf, idb);
+
+ /*
+ * This buffer is ready to execute, so we can take
+ * it off the pending queue and put it on the run
+ * queue.
+ */
+ STAILQ_REMOVE(&dev->pending_queue, buf, camdd_buf,
+ links);
+ dev->num_pending_queue--;
+ STAILQ_INSERT_TAIL(&dev->run_queue, buf, links);
+ dev->num_run_queue++;
+
+ cur_offset = indirect->offset + indirect->len;
+
+ /*
+ * The resulting I/O would be too large to fit in
+ * one block. We need to split this I/O into
+ * multiple pieces. Allocate as many buffers as needed.
+ */
+ for (len_to_go = rb_data->fill_len - rb_data->resid -
+ indirect->len; len_to_go > 0;) {
+ struct camdd_buf *new_buf;
+ struct camdd_buf_data *new_data;
+ uint64_t lba;
+ ssize_t len;
+
+ retval = camdd_get_next_lba_len(dev, &lba, &len);
+ if ((retval != 0)
+ && (len == 0)) {
+ /*
+ * The device has already been marked
+ * as EOF, and there is no space left.
+ */
+ goto bailout;
+ }
+
+ new_buf = camdd_get_buf(dev, CAMDD_BUF_DATA);
+ if (new_buf == NULL) {
+ retval = 1;
+ goto bailout;
+ }
+
+ new_buf->lba = lba;
+ new_buf->len = len;
+
+ idb = camdd_get_buf(dev, CAMDD_BUF_INDIRECT);
+ if (idb == NULL) {
+ retval = 1;
+ goto bailout;
+ }
+
+ indirect = &idb->buf_type_spec.indirect;
+
+ indirect->src_buf = read_buf;
+ read_buf->refcount++;
+ indirect->offset = cur_offset;
+ indirect->start_ptr = rb_data->buf + cur_offset;
+ indirect->len = min(len_to_go, new_buf->len);
+#if 0
+ if (((indirect->len % dev->sector_size) != 0)
+ || ((indirect->offset % dev->sector_size) != 0)) {
+ warnx("offset %ju len %ju not aligned with "
+ "sector size %u", indirect->offset,
+ (uintmax_t)indirect->len, dev->sector_size);
+ }
+#endif
+ cur_offset += indirect->len;
+ len_to_go -= indirect->len;
+
+ camdd_buf_add_child(new_buf, idb);
+
+ new_data = &new_buf->buf_type_spec.data;
+
+ if ((new_data->fill_len == new_buf->len)
+ || (eof_flush_needed != 0)) {
+ STAILQ_INSERT_TAIL(&dev->run_queue,
+ new_buf, links);
+ dev->num_run_queue++;
+ } else if (new_data->fill_len < buf->len) {
+ STAILQ_INSERT_TAIL(&dev->pending_queue,
+ new_buf, links);
+ dev->num_pending_queue++;
+ } else {
+ warnx("%s: too much data in new "
+ "buffer!", __func__);
+ retval = 1;
+ goto bailout;
+ }
+ }
+ }
+
+bailout:
+ return (retval);
+}
+
+void
+camdd_get_depth(struct camdd_dev *dev, uint32_t *our_depth,
+ uint32_t *peer_depth, uint32_t *our_bytes, uint32_t *peer_bytes)
+{
+ *our_depth = dev->cur_active_io + dev->num_run_queue;
+ if (dev->num_peer_work_queue >
+ dev->num_peer_done_queue)
+ *peer_depth = dev->num_peer_work_queue -
+ dev->num_peer_done_queue;
+ else
+ *peer_depth = 0;
+ *our_bytes = *our_depth * dev->blocksize;
+ *peer_bytes = dev->peer_bytes_queued;
+}
+
+void
+camdd_sig_handler(int sig)
+{
+ if (sig == SIGINFO)
+ need_status = 1;
+ else {
+ need_exit = 1;
+ error_exit = 1;
+ }
+
+ sem_post(&camdd_sem);
+}
+
+void
+camdd_print_status(struct camdd_dev *camdd_dev, struct camdd_dev *other_dev,
+ struct timespec *start_time)
+{
+ struct timespec done_time;
+ uint64_t total_ns;
+ long double mb_sec, total_sec;
+ int error = 0;
+
+ error = clock_gettime(CLOCK_MONOTONIC_PRECISE, &done_time);
+ if (error != 0) {
+ warn("Unable to get done time");
+ return;
+ }
+
+ timespecsub(&done_time, start_time);
+
+ total_ns = done_time.tv_nsec + (done_time.tv_sec * 1000000000);
+ total_sec = total_ns;
+ total_sec /= 1000000000;
+
+ fprintf(stderr, "%ju bytes %s %s\n%ju bytes %s %s\n"
+ "%.4Lf seconds elapsed\n",
+ (uintmax_t)camdd_dev->bytes_transferred,
+ (camdd_dev->write_dev == 0) ? "read from" : "written to",
+ camdd_dev->device_name,
+ (uintmax_t)other_dev->bytes_transferred,
+ (other_dev->write_dev == 0) ? "read from" : "written to",
+ other_dev->device_name, total_sec);
+
+ mb_sec = min(other_dev->bytes_transferred,camdd_dev->bytes_transferred);
+ mb_sec /= 1024 * 1024;
+ mb_sec *= 1000000000;
+ mb_sec /= total_ns;
+ fprintf(stderr, "%.2Lf MB/sec\n", mb_sec);
+}
+
+int
+camdd_rw(struct camdd_io_opts *io_opts, int num_io_opts, uint64_t max_io,
+ int retry_count, int timeout)
+{
+ struct cam_device *new_cam_dev = NULL;
+ struct camdd_dev *devs[2];
+ struct timespec start_time;
+ pthread_t threads[2];
+ int unit = 0;
+ int error = 0;
+ int i;
+
+ if (num_io_opts != 2) {
+ warnx("Must have one input and one output path");
+ error = 1;
+ goto bailout;
+ }
+
+ bzero(devs, sizeof(devs));
+
+ for (i = 0; i < num_io_opts; i++) {
+ switch (io_opts[i].dev_type) {
+ case CAMDD_DEV_PASS: {
+ if (isdigit(io_opts[i].dev_name[0])) {
+ camdd_argmask new_arglist = CAMDD_ARG_NONE;
+ int bus = 0, target = 0, lun = 0;
+ int rv;
+
+ /* device specified as bus:target[:lun] */
+ rv = parse_btl(io_opts[i].dev_name, &bus,
+ &target, &lun, &new_arglist);
+ if (rv < 2) {
+ warnx("numeric device specification "
+ "must be either bus:target, or "
+ "bus:target:lun");
+ error = 1;
+ goto bailout;
+ }
+ /* default to 0 if lun was not specified */
+ if ((new_arglist & CAMDD_ARG_LUN) == 0) {
+ lun = 0;
+ new_arglist |= CAMDD_ARG_LUN;
+ }
+ new_cam_dev = cam_open_btl(bus, target, lun,
+ O_RDWR, NULL);
+ } else {
+ char name[30];
+
+ if (cam_get_device(io_opts[i].dev_name, name,
+ sizeof name, &unit) == -1) {
+ warnx("%s", cam_errbuf);
+ error = 1;
+ goto bailout;
+ }
+ new_cam_dev = cam_open_spec_device(name, unit,
+ O_RDWR, NULL);
+ }
+
+ if (new_cam_dev == NULL) {
+ warnx("%s", cam_errbuf);
+ error = 1;
+ goto bailout;
+ }
+
+ devs[i] = camdd_probe_pass(new_cam_dev,
+ /*io_opts*/ &io_opts[i],
+ CAMDD_ARG_ERR_RECOVER,
+ /*probe_retry_count*/ 3,
+ /*probe_timeout*/ 5000,
+ /*io_retry_count*/ retry_count,
+ /*io_timeout*/ timeout);
+ if (devs[i] == NULL) {
+ warn("Unable to probe device %s%u",
+ new_cam_dev->device_name,
+ new_cam_dev->dev_unit_num);
+ error = 1;
+ goto bailout;
+ }
+ break;
+ }
+ case CAMDD_DEV_FILE: {
+ int fd = -1;
+
+ if (io_opts[i].dev_name[0] == '-') {
+ if (io_opts[i].write_dev != 0)
+ fd = STDOUT_FILENO;
+ else
+ fd = STDIN_FILENO;
+ } else {
+ if (io_opts[i].write_dev != 0) {
+ fd = open(io_opts[i].dev_name,
+ O_RDWR | O_CREAT, S_IWUSR |S_IRUSR);
+ } else {
+ fd = open(io_opts[i].dev_name,
+ O_RDONLY);
+ }
+ }
+ if (fd == -1) {
+ warn("error opening file %s",
+ io_opts[i].dev_name);
+ error = 1;
+ goto bailout;
+ }
+
+ devs[i] = camdd_probe_file(fd, &io_opts[i],
+ retry_count, timeout);
+ if (devs[i] == NULL) {
+ error = 1;
+ goto bailout;
+ }
+
+ break;
+ }
+ default:
+ warnx("Unknown device type %d (%s)",
+ io_opts[i].dev_type, io_opts[i].dev_name);
+ error = 1;
+ goto bailout;
+ break; /*NOTREACHED */
+ }
+
+ devs[i]->write_dev = io_opts[i].write_dev;
+
+ devs[i]->start_offset_bytes = io_opts[i].offset;
+
+ if (max_io != 0) {
+ devs[i]->sector_io_limit =
+ (devs[i]->start_offset_bytes /
+ devs[i]->sector_size) +
+ (max_io / devs[i]->sector_size) - 1;
+ devs[i]->sector_io_limit =
+ (devs[i]->start_offset_bytes /
+ devs[i]->sector_size) +
+ (max_io / devs[i]->sector_size) - 1;
+ }
+
+ devs[i]->next_io_pos_bytes = devs[i]->start_offset_bytes;
+ devs[i]->next_completion_pos_bytes =devs[i]->start_offset_bytes;
+ }
+
+ devs[0]->peer_dev = devs[1];
+ devs[1]->peer_dev = devs[0];
+ devs[0]->next_peer_pos_bytes = devs[0]->peer_dev->next_io_pos_bytes;
+ devs[1]->next_peer_pos_bytes = devs[1]->peer_dev->next_io_pos_bytes;
+
+ sem_init(&camdd_sem, /*pshared*/ 0, 0);
+
+ signal(SIGINFO, camdd_sig_handler);
+ signal(SIGINT, camdd_sig_handler);
+
+ error = clock_gettime(CLOCK_MONOTONIC_PRECISE, &start_time);
+ if (error != 0) {
+ warn("Unable to get start time");
+ goto bailout;
+ }
+
+ for (i = 0; i < num_io_opts; i++) {
+ error = pthread_create(&threads[i], NULL, camdd_worker,
+ (void *)devs[i]);
+ if (error != 0) {
+ warnc(error, "pthread_create() failed");
+ goto bailout;
+ }
+ }
+
+ for (;;) {
+ if ((sem_wait(&camdd_sem) == -1)
+ || (need_exit != 0)) {
+ struct kevent ke;
+
+ for (i = 0; i < num_io_opts; i++) {
+ EV_SET(&ke, (uintptr_t)&devs[i]->work_queue,
+ EVFILT_USER, 0, NOTE_TRIGGER, 0, NULL);
+
+ devs[i]->flags |= CAMDD_DEV_FLAG_EOF;
+
+ error = kevent(devs[i]->kq, &ke, 1, NULL, 0,
+ NULL);
+ if (error == -1)
+ warn("%s: unable to wake up thread",
+ __func__);
+ error = 0;
+ }
+ break;
+ } else if (need_status != 0) {
+ camdd_print_status(devs[0], devs[1], &start_time);
+ need_status = 0;
+ }
+ }
+ for (i = 0; i < num_io_opts; i++) {
+ pthread_join(threads[i], NULL);
+ }
+
+ camdd_print_status(devs[0], devs[1], &start_time);
+
+bailout:
+
+ for (i = 0; i < num_io_opts; i++)
+ camdd_free_dev(devs[i]);
+
+ return (error + error_exit);
+}
+
+void
+usage(void)
+{
+ fprintf(stderr,
+"usage: camdd <-i|-o pass=pass0,bs=1M,offset=1M,depth=4>\n"
+" <-i|-o file=/tmp/file,bs=512K,offset=1M>\n"
+" <-i|-o file=/dev/da0,bs=512K,offset=1M>\n"
+" <-i|-o file=/dev/nsa0,bs=512K>\n"
+" [-C retry_count][-E][-m max_io_amt][-t timeout_secs][-v][-h]\n"
+"Option description\n"
+"-i <arg=val> Specify input device/file and parameters\n"
+"-o <arg=val> Specify output device/file and parameters\n"
+"Input and Output parameters\n"
+"pass=name Specify a pass(4) device like pass0 or /dev/pass0\n"
+"file=name Specify a file or device, /tmp/foo, /dev/da0, /dev/null\n"
+" or - for stdin/stdout\n"
+"bs=blocksize Specify blocksize in bytes, or using K, M, G, etc. suffix\n"
+"offset=len Specify starting offset in bytes or using K, M, G suffix\n"
+" NOTE: offset cannot be specified on tapes, pipes, stdin/out\n"
+"depth=N Specify a numeric queue depth. This only applies to pass(4)\n"
+"mcs=N Specify a minimum cmd size for pass(4) read/write commands\n"
+"Optional arguments\n"
+"-C retry_cnt Specify a retry count for pass(4) devices\n"
+"-E Enable CAM error recovery for pass(4) devices\n"
+"-m max_io Specify the maximum amount to be transferred in bytes or\n"
+" using K, G, M, etc. suffixes\n"
+"-t timeout Specify the I/O timeout to use with pass(4) devices\n"
+"-v Enable verbose error recovery\n"
+"-h Print this message\n");
+}
+
+
+int
+camdd_parse_io_opts(char *args, int is_write, struct camdd_io_opts *io_opts)
+{
+ char *tmpstr, *tmpstr2;
+ char *orig_tmpstr = NULL;
+ int retval = 0;
+
+ io_opts->write_dev = is_write;
+
+ tmpstr = strdup(args);
+ if (tmpstr == NULL) {
+ warn("strdup failed");
+ retval = 1;
+ goto bailout;
+ }
+ orig_tmpstr = tmpstr;
+ while ((tmpstr2 = strsep(&tmpstr, ",")) != NULL) {
+ char *name, *value;
+
+ /*
+ * If the user creates an empty parameter by putting in two
+ * commas, skip over it and look for the next field.
+ */
+ if (*tmpstr2 == '\0')
+ continue;
+
+ name = strsep(&tmpstr2, "=");
+ if (*name == '\0') {
+ warnx("Got empty I/O parameter name");
+ retval = 1;
+ goto bailout;
+ }
+ value = strsep(&tmpstr2, "=");
+ if ((value == NULL)
+ || (*value == '\0')) {
+ warnx("Empty I/O parameter value for %s", name);
+ retval = 1;
+ goto bailout;
+ }
+ if (strncasecmp(name, "file", 4) == 0) {
+ io_opts->dev_type = CAMDD_DEV_FILE;
+ io_opts->dev_name = strdup(value);
+ if (io_opts->dev_name == NULL) {
+ warn("Error allocating memory");
+ retval = 1;
+ goto bailout;
+ }
+ } else if (strncasecmp(name, "pass", 4) == 0) {
+ io_opts->dev_type = CAMDD_DEV_PASS;
+ io_opts->dev_name = strdup(value);
+ if (io_opts->dev_name == NULL) {
+ warn("Error allocating memory");
+ retval = 1;
+ goto bailout;
+ }
+ } else if ((strncasecmp(name, "bs", 2) == 0)
+ || (strncasecmp(name, "blocksize", 9) == 0)) {
+ retval = expand_number(value, &io_opts->blocksize);
+ if (retval == -1) {
+ warn("expand_number(3) failed on %s=%s", name,
+ value);
+ retval = 1;
+ goto bailout;
+ }
+ } else if (strncasecmp(name, "depth", 5) == 0) {
+ char *endptr;
+
+ io_opts->queue_depth = strtoull(value, &endptr, 0);
+ if (*endptr != '\0') {
+ warnx("invalid queue depth %s", value);
+ retval = 1;
+ goto bailout;
+ }
+ } else if (strncasecmp(name, "mcs", 3) == 0) {
+ char *endptr;
+
+ io_opts->min_cmd_size = strtol(value, &endptr, 0);
+ if ((*endptr != '\0')
+ || ((io_opts->min_cmd_size > 16)
+ || (io_opts->min_cmd_size < 0))) {
+ warnx("invalid minimum cmd size %s", value);
+ retval = 1;
+ goto bailout;
+ }
+ } else if (strncasecmp(name, "offset", 6) == 0) {
+ retval = expand_number(value, &io_opts->offset);
+ if (retval == -1) {
+ warn("expand_number(3) failed on %s=%s", name,
+ value);
+ retval = 1;
+ goto bailout;
+ }
+ } else if (strncasecmp(name, "debug", 5) == 0) {
+ char *endptr;
+
+ io_opts->debug = strtoull(value, &endptr, 0);
+ if (*endptr != '\0') {
+ warnx("invalid debug level %s", value);
+ retval = 1;
+ goto bailout;
+ }
+ } else {
+ warnx("Unrecognized parameter %s=%s", name, value);
+ }
+ }
+bailout:
+ free(orig_tmpstr);
+
+ return (retval);
+}
+
+int
+main(int argc, char **argv)
+{
+ int c;
+ camdd_argmask arglist = CAMDD_ARG_NONE;
+ int timeout = 0, retry_count = 1;
+ int error = 0;
+ uint64_t max_io = 0;
+ struct camdd_io_opts *opt_list = NULL;
+
+ if (argc == 1) {
+ usage();
+ exit(1);
+ }
+
+ opt_list = calloc(2, sizeof(struct camdd_io_opts));
+ if (opt_list == NULL) {
+ warn("Unable to allocate option list");
+ error = 1;
+ goto bailout;
+ }
+
+ while ((c = getopt(argc, argv, "C:Ehi:m:o:t:v")) != -1){
+ switch (c) {
+ case 'C':
+ retry_count = strtol(optarg, NULL, 0);
+ if (retry_count < 0)
+ errx(1, "retry count %d is < 0",
+ retry_count);
+ arglist |= CAMDD_ARG_RETRIES;
+ break;
+ case 'E':
+ arglist |= CAMDD_ARG_ERR_RECOVER;
+ break;
+ case 'i':
+ case 'o':
+ if (((c == 'i')
+ && (opt_list[0].dev_type != CAMDD_DEV_NONE))
+ || ((c == 'o')
+ && (opt_list[1].dev_type != CAMDD_DEV_NONE))) {
+ errx(1, "Only one input and output path "
+ "allowed");
+ }
+ error = camdd_parse_io_opts(optarg, (c == 'o') ? 1 : 0,
+ (c == 'o') ? &opt_list[1] : &opt_list[0]);
+ if (error != 0)
+ goto bailout;
+ break;
+ case 'm':
+ error = expand_number(optarg, &max_io);
+ if (error == -1) {
+ warn("invalid maximum I/O amount %s", optarg);
+ error = 1;
+ goto bailout;
+ }
+ break;
+ case 't':
+ timeout = strtol(optarg, NULL, 0);
+ if (timeout < 0)
+ errx(1, "invalid timeout %d", timeout);
+ /* Convert the timeout from seconds to ms */
+ timeout *= 1000;
+ arglist |= CAMDD_ARG_TIMEOUT;
+ break;
+ case 'v':
+ arglist |= CAMDD_ARG_VERBOSE;
+ break;
+ case 'h':
+ default:
+ usage();
+ exit(1);
+ break; /*NOTREACHED*/
+ }
+ }
+
+ if ((opt_list[0].dev_type == CAMDD_DEV_NONE)
+ || (opt_list[1].dev_type == CAMDD_DEV_NONE))
+ errx(1, "Must specify both -i and -o");
+
+ /*
+ * Set the timeout if the user hasn't specified one.
+ */
+ if (timeout == 0)
+ timeout = CAMDD_PASS_RW_TIMEOUT;
+
+ error = camdd_rw(opt_list, 2, max_io, retry_count, timeout);
+
+bailout:
+ free(opt_list);
+
+ exit(error);
+}
Property changes on: trunk/usr.sbin/camdd/camdd.c
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:keywords
## -0,0 +1 ##
+MidnightBSD=%H
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
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