--- /dev/null
+/*
+ * Copyright (c) 2009, 2010 Jeff Mahoney <jeffm@suse.com>
+ * 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.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "defs.h"
+#ifdef LINUX
+#include <stdint.h>
+#include <linux/blkpg.h>
+#include <linux/fs.h>
+#include <linux/hdreg.h>
+
+/* ioctls <= 114 are present in Linux 2.4. The following ones have been
+ * added since then and headers containing them may not be available on
+ * every system. */
+
+#define BLKTRACE_BDEV_SIZE 32
+struct blk_user_trace_setup {
+ char name[BLKTRACE_BDEV_SIZE]; /* output */
+ uint16_t act_mask; /* input */
+ uint32_t buf_size; /* input */
+ uint32_t buf_nr; /* input */
+ uint64_t start_lba;
+ uint64_t end_lba;
+ uint32_t pid;
+};
+
+#ifndef BLKTRACESETUP
+#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
+#endif
+#ifndef BLKTRACESTART
+#define BLKTRACESTART _IO(0x12,116)
+#endif
+#ifndef BLKTRACESTART
+#define BLKTRACESTOP _IO(0x12,117)
+#endif
+#ifndef BLKTRACETEARDOWN
+#define BLKTRACETEARDOWN _IO(0x12,118)
+#endif
+#ifndef BLKDISCARD
+#define BLKDISCARD _IO(0x12,119)
+#endif
+#ifndef BLKIOMIN
+#define BLKIOMIN _IO(0x12,120)
+#endif
+#ifndef BLKIOOPT
+#define BLKIOOPT _IO(0x12,121)
+#endif
+#ifndef BLKALIGNOFF
+#define BLKALIGNOFF _IO(0x12,122)
+#endif
+#ifndef BLKPBSZGET
+#define BLKPBSZGET _IO(0x12,123)
+#endif
+#ifndef BLKDISCARDZEROES
+#define BLKDISCARDZEROES _IO(0x12,124)
+#endif
+#ifndef BLKSECDISCARD
+#define BLKSECDISCARD _IO(0x12,125)
+#endif
+
+static const struct xlat blkpg_ops[] = {
+ { BLKPG_ADD_PARTITION, "BLKPG_ADD_PARTITION", },
+ { BLKPG_DEL_PARTITION, "BLKPG_DEL_PARTITION", },
+ { 0, NULL },
+};
+
+static void
+print_blkpg_req(struct tcb *tcp, struct blkpg_ioctl_arg *blkpg)
+{
+ struct blkpg_partition p;
+ const char *ioctl_name;
+
+ ioctl_name = xlookup(blkpg_ops, blkpg->op);
+ if (!ioctl_name) {
+ tprintf("{%#x, /* BLKPG_??? */", blkpg->op);
+ return;
+ }
+
+ tprintf("{%s, flags=%d, datalen=%d, ",
+ ioctl_name, blkpg->flags, blkpg->datalen);
+
+ if (umove(tcp, (unsigned long)blkpg->data, &p) < 0) {
+ tprintf("%#lx", (unsigned long)blkpg->data);
+ return;
+ }
+
+ tprintf("{start=%lld, length=%lld, pno=%d, ",
+ p.start, p.length, p.pno);
+
+ tprintf("devname=\"%s\", volname=\"%s\"}",
+ p.devname, p.volname);
+}
+
+int
+block_ioctl(struct tcb *tcp, long code, long arg)
+{
+ switch (code) {
+
+ /* These pass arg as a value, not a pointer */
+ case BLKRASET:
+ case BLKFRASET:
+ if (entering(tcp))
+ tprintf(", %ld", arg);
+ break;
+
+ /* Just pass in a signed int */
+ case BLKROSET:
+ case BLKBSZSET:
+ if (entering(tcp)) {
+ int int_val;
+ if (umove(tcp, arg, &int_val) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", %d", int_val);
+ }
+ break;
+
+ /* Just return an unsigned short */
+ case BLKSECTGET:
+ if (exiting(tcp)) {
+ unsigned short ushort_val;
+ if (umove(tcp, arg, &ushort_val) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", %hu", ushort_val);
+ }
+ break;
+
+ /* Just return a signed int */
+ case BLKROGET:
+ case BLKBSZGET:
+ case BLKSSZGET:
+ case BLKALIGNOFF:
+ if (exiting(tcp)) {
+ int int_val;
+ if (umove(tcp, arg, &int_val) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", %d", int_val);
+ }
+ break;
+
+ /* Just return an unsigned int */
+ case BLKPBSZGET:
+ case BLKIOMIN:
+ case BLKIOOPT:
+ case BLKDISCARDZEROES:
+ if (exiting(tcp)) {
+ unsigned int uint_val;
+ if (umove(tcp, arg, &uint_val) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", %u", uint_val);
+ }
+ break;
+
+ /* Just return a signed long */
+ case BLKRAGET:
+ case BLKFRAGET:
+ if (exiting(tcp)) {
+ long size;
+ if (umove(tcp, arg, &size) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", %ld", size);
+ }
+ break;
+
+ /* Just return an unsigned long */
+ case BLKGETSIZE:
+ if (exiting(tcp)) {
+ unsigned long ulong_val;
+ if (umove(tcp, arg, &ulong_val) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", %lu", ulong_val);
+ }
+ break;
+
+ /* Just return a quad */
+ case BLKGETSIZE64:
+ if (exiting(tcp)) {
+ uint64_t uint64_val;
+ if (umove(tcp, arg, &uint64_val) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", %llu",
+ (unsigned long long)uint64_val);
+ }
+ break;
+
+ /* More complex types */
+ case BLKDISCARD:
+ case BLKSECDISCARD:
+ if (entering(tcp)) {
+ uint64_t range[2];
+ if (umove(tcp, arg, range) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", {%llx, %llx}",
+ (unsigned long long)range[0],
+ (unsigned long long)range[1]);
+ }
+ break;
+
+ case HDIO_GETGEO:
+ if (exiting(tcp)) {
+ struct hd_geometry geo;
+ if (umove(tcp, arg, &geo) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", {heads=%hhu, sectors=%hhu, "
+ "cylinders=%hu, start=%lu}",
+ geo.heads, geo.sectors,
+ geo.cylinders, geo.start);
+ }
+ break;
+ case BLKPG:
+ if (entering(tcp)) {
+ struct blkpg_ioctl_arg blkpg;
+ if (umove(tcp, arg, &blkpg) < 0)
+ tprintf(", %#lx", arg);
+ else {
+ tprintf(", ");
+ print_blkpg_req(tcp, &blkpg);
+ }
+ }
+ if (exiting(tcp)) {
+ tprintf("}");
+ }
+ break;
+ case BLKTRACESETUP:
+ if (entering(tcp)) {
+ struct blk_user_trace_setup buts;
+ if (umove(tcp, arg, &buts) < 0)
+ tprintf(", %#lx", arg);
+ else {
+ tprintf(", {act_mask=%hu, buf_size=%u, ",
+ buts.act_mask, buts.buf_size);
+ tprintf("buf_nr=%u, start_lba=%llu, ",
+ buts.buf_nr,
+ (unsigned long long)buts.start_lba);
+ tprintf("end_lba=%llu, pid=%u}",
+ (unsigned long long)buts.end_lba,
+ buts.pid);
+ }
+ }
+ if (exiting(tcp)) {
+ struct blk_user_trace_setup buts;
+ if (umove(tcp, arg, &buts) < 0)
+ tprintf(", %#lx", arg);
+ else
+ tprintf(", {name=\"%s\"}", buts.name);
+ }
+ break;
+ /* No arguments or unhandled */
+ case BLKTRACESTART:
+ case BLKTRACESTOP:
+ case BLKTRACETEARDOWN:
+ case BLKFLSBUF: /* Requires driver knowlege */
+ case BLKRRPART: /* No args */
+ default:
+ if (entering(tcp))
+ tprintf(", %#lx", arg);
+ break;
+
+ };
+ return 1;
+}
+#endif /* LINUX */
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