5b88608b29
The freeze/thaw ones are simple, but the trim is an interesting struct. * block.c (block_ioctl): Handle FIFREEZE/FITHAW/FITRIM. * ioctl.c (ioctl_decode): Pass 'X' ioctls to block_ioctl.
300 lines
7.2 KiB
C
300 lines
7.2 KiB
C
/*
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* Copyright (c) 2009, 2010 Jeff Mahoney <jeffm@suse.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include <linux/blkpg.h>
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#include <linux/fs.h>
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#include <linux/hdreg.h>
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/* ioctls <= 114 are present in Linux 2.4. The following ones have been
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* added since then and headers containing them may not be available on
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* every system. */
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#define BLKTRACE_BDEV_SIZE 32
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struct blk_user_trace_setup {
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char name[BLKTRACE_BDEV_SIZE]; /* output */
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uint16_t act_mask; /* input */
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uint32_t buf_size; /* input */
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uint32_t buf_nr; /* input */
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uint64_t start_lba;
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uint64_t end_lba;
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uint32_t pid;
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};
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#ifndef BLKTRACESETUP
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#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
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#endif
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#ifndef BLKTRACESTART
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#define BLKTRACESTART _IO(0x12,116)
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#endif
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#ifndef BLKTRACESTOP
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#define BLKTRACESTOP _IO(0x12,117)
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#endif
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#ifndef BLKTRACETEARDOWN
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#define BLKTRACETEARDOWN _IO(0x12,118)
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#endif
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#ifndef BLKDISCARD
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#define BLKDISCARD _IO(0x12,119)
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#endif
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#ifndef BLKIOMIN
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#define BLKIOMIN _IO(0x12,120)
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#endif
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#ifndef BLKIOOPT
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#define BLKIOOPT _IO(0x12,121)
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#endif
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#ifndef BLKALIGNOFF
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#define BLKALIGNOFF _IO(0x12,122)
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#endif
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#ifndef BLKPBSZGET
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#define BLKPBSZGET _IO(0x12,123)
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#endif
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#ifndef BLKDISCARDZEROES
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#define BLKDISCARDZEROES _IO(0x12,124)
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#endif
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#ifndef BLKSECDISCARD
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#define BLKSECDISCARD _IO(0x12,125)
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#endif
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#include "xlat/blkpg_ops.h"
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static void
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print_blkpg_req(struct tcb *tcp, struct blkpg_ioctl_arg *blkpg)
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{
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struct blkpg_partition p;
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tprints("{");
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printxval(blkpg_ops, blkpg->op, "BLKPG_???");
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tprintf(", flags=%d, datalen=%d, ",
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blkpg->flags, blkpg->datalen);
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if (umove(tcp, (long) blkpg->data, &p) < 0)
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tprintf("%#lx}", (long) blkpg->data);
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else
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tprintf("{start=%lld, length=%lld, pno=%d, "
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"devname=\"%.*s\", volname=\"%.*s\"}}",
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p.start, p.length, p.pno,
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(int) sizeof(p.devname), p.devname,
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(int) sizeof(p.volname), p.volname);
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}
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int
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block_ioctl(struct tcb *tcp, long code, long arg)
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{
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switch (code) {
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/* take arg as a value, not as a pointer */
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case BLKRASET:
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case BLKFRASET:
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if (entering(tcp))
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tprintf(", %ld", arg);
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break;
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/* take a signed int */
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case BLKROSET:
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case BLKBSZSET:
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#ifdef FIFREEZE
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/* First seen in linux-2.6.29 */
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case FIFREEZE:
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case FITHAW:
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#endif
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if (entering(tcp)) {
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int val;
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if (umove(tcp, arg, &val) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", %d", val);
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}
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break;
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/* returns an unsigned short */
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case BLKSECTGET:
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if (exiting(tcp)) {
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unsigned short val;
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if (syserror(tcp) || umove(tcp, arg, &val) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", %u", (unsigned)val);
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}
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break;
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/* return a signed int */
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case BLKROGET:
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case BLKBSZGET:
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case BLKSSZGET:
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case BLKALIGNOFF:
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if (exiting(tcp)) {
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int val;
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if (syserror(tcp) || umove(tcp, arg, &val) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", %d", val);
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}
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break;
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/* return an unsigned int */
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case BLKPBSZGET:
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case BLKIOMIN:
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case BLKIOOPT:
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case BLKDISCARDZEROES:
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if (exiting(tcp)) {
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unsigned int val;
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if (syserror(tcp) || umove(tcp, arg, &val) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", %u", val);
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}
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break;
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/* return a signed long */
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case BLKRAGET:
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case BLKFRAGET:
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if (exiting(tcp)) {
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long val;
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if (syserror(tcp) || umove(tcp, arg, &val) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", %ld", val);
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}
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break;
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/* returns an unsigned long */
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case BLKGETSIZE:
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if (exiting(tcp)) {
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unsigned long val;
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if (syserror(tcp) || umove(tcp, arg, &val) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", %lu", val);
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}
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break;
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#ifdef HAVE_BLKGETSIZE64
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/* return an uint64_t */
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case BLKGETSIZE64:
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if (exiting(tcp)) {
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uint64_t val;
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if (syserror(tcp) || umove(tcp, arg, &val) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", %" PRIu64, val);
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}
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break;
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#endif
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/* More complex types */
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case BLKDISCARD:
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case BLKSECDISCARD:
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if (entering(tcp)) {
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uint64_t range[2];
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if (umove(tcp, arg, range) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", {%" PRIx64 ", %" PRIx64 "}",
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range[0], range[1]);
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}
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break;
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case HDIO_GETGEO:
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if (exiting(tcp)) {
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struct hd_geometry geo;
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if (syserror(tcp) || umove(tcp, arg, &geo) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", {heads=%u, sectors=%u, "
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"cylinders=%u, start=%lu}",
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(unsigned)geo.heads,
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(unsigned)geo.sectors,
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(unsigned)geo.cylinders,
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geo.start);
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}
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break;
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case BLKPG:
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if (entering(tcp)) {
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struct blkpg_ioctl_arg blkpg;
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if (umove(tcp, arg, &blkpg) < 0)
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tprintf(", %#lx", arg);
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else {
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tprints(", ");
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print_blkpg_req(tcp, &blkpg);
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}
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}
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break;
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case BLKTRACESETUP:
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if (entering(tcp)) {
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struct blk_user_trace_setup buts;
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if (umove(tcp, arg, &buts) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", {act_mask=%u, buf_size=%u, "
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"buf_nr=%u, start_lba=%" PRIu64 ", "
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"end_lba=%" PRIu64 ", pid=%u}",
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(unsigned)buts.act_mask, buts.buf_size,
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buts.buf_nr, buts.start_lba,
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buts.end_lba, buts.pid);
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}
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if (exiting(tcp)) {
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struct blk_user_trace_setup buts;
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if (syserror(tcp) || umove(tcp, arg, &buts) < 0)
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tprintf(", %#lx", arg);
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else
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tprintf(", {name=\"%.*s\"}",
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(int) sizeof(buts.name), buts.name);
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}
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break;
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#ifdef FITRIM
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/* First seen in linux-2.6.37 */
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case FITRIM:
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if (entering(tcp)) {
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struct fstrim_range fstrim;
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if (umove(tcp, arg, &fstrim))
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tprintf(", %#lx", arg);
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else
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tprintf(", {start=%#" PRIx64 ", len=%#" PRIx64 ", "
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"minlen=%#" PRIx64 "}", (uint64_t) fstrim.start,
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(uint64_t) fstrim.len, (uint64_t) fstrim.minlen);
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}
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break;
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#endif
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/* No arguments or unhandled */
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case BLKTRACESTART:
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case BLKTRACESTOP:
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case BLKTRACETEARDOWN:
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case BLKFLSBUF: /* Requires driver knowlege */
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case BLKRRPART: /* No args */
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default:
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if (entering(tcp))
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tprintf(", %#lx", arg);
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break;
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};
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return 1;
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}
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