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274 lines
6.7 KiB
274 lines
6.7 KiB
/* |
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* Copyright (c) 2009, 2010 Jeff Mahoney <jeffm@suse.com> |
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* Copyright (c) 2011-2016 Dmitry V. Levin <ldv@altlinux.org> |
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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 DEF_MPERS_TYPE(struct_blk_user_trace_setup) |
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#include DEF_MPERS_TYPE(struct_blkpg_ioctl_arg) |
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#include DEF_MPERS_TYPE(struct_blkpg_partition) |
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#include <linux/ioctl.h> |
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#include <linux/fs.h> |
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typedef struct { |
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int op; |
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int flags; |
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int datalen; |
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void *data; |
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} struct_blkpg_ioctl_arg; |
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#define BLKPG_DEVNAMELTH 64 |
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#define BLKPG_VOLNAMELTH 64 |
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typedef struct { |
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int64_t start; /* starting offset in bytes */ |
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int64_t length; /* length in bytes */ |
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int pno; /* partition number */ |
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char devname[BLKPG_DEVNAMELTH]; /* partition name, like sda5 or c0d1p2, |
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to be used in kernel messages */ |
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char volname[BLKPG_VOLNAMELTH]; /* volume label */ |
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} struct_blkpg_partition; |
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#define BLKTRACE_BDEV_SIZE 32 |
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typedef 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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} struct_blk_user_trace_setup; |
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#include MPERS_DEFS |
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#ifndef BLKPG |
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# define BLKPG _IO(0x12, 105) |
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#endif |
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/* |
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* ioctl numbers <= 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 every |
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* system. |
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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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#ifndef BLKROTATIONAL |
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# define BLKROTATIONAL _IO(0x12, 126) |
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#endif |
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#ifndef BLKZEROOUT |
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# define BLKZEROOUT _IO(0x12, 127) |
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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, const 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, data=", |
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blkpg->flags, blkpg->datalen); |
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if (!umove_or_printaddr(tcp, ptr_to_kulong(blkpg->data), &p)) { |
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tprintf("{start=%" PRId64 ", length=%" PRId64 |
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", pno=%d, devname=", |
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p.start, p.length, p.pno); |
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print_quoted_string(p.devname, sizeof(p.devname), |
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QUOTE_0_TERMINATED); |
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tprints(", volname="); |
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print_quoted_string(p.volname, sizeof(p.volname), |
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QUOTE_0_TERMINATED); |
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tprints("}"); |
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} |
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tprints("}"); |
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} |
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MPERS_PRINTER_DECL(int, block_ioctl, struct tcb *const tcp, |
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const unsigned int code, const kernel_ulong_t 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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tprintf(", %" PRI_klu, arg); |
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break; |
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/* return an unsigned short */ |
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case BLKSECTGET: |
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case BLKROTATIONAL: |
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if (entering(tcp)) |
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return 0; |
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tprints(", "); |
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printnum_short(tcp, arg, "%hu"); |
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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 (entering(tcp)) |
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return 0; |
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/* fall through */ |
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/* take a signed int */ |
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case BLKROSET: |
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case BLKBSZSET: |
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tprints(", "); |
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printnum_int(tcp, arg, "%d"); |
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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 (entering(tcp)) |
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return 0; |
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tprints(", "); |
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printnum_int(tcp, arg, "%u"); |
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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 (entering(tcp)) |
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return 0; |
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tprints(", "); |
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printnum_slong(tcp, arg); |
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break; |
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/* returns an unsigned long */ |
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case BLKGETSIZE: |
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if (entering(tcp)) |
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return 0; |
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tprints(", "); |
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printnum_ulong(tcp, arg); |
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break; |
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#ifdef HAVE_BLKGETSIZE64 |
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/* returns an uint64_t */ |
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case BLKGETSIZE64: |
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if (entering(tcp)) |
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return 0; |
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tprints(", "); |
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printnum_int64(tcp, arg, "%" PRIu64); |
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break; |
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#endif |
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/* takes a pair of uint64_t */ |
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case BLKDISCARD: |
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case BLKSECDISCARD: |
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case BLKZEROOUT: |
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tprints(", "); |
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printpair_int64(tcp, arg, "%" PRIu64); |
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break; |
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/* More complex types */ |
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case BLKPG: { |
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struct_blkpg_ioctl_arg blkpg; |
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tprints(", "); |
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if (!umove_or_printaddr(tcp, arg, &blkpg)) |
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print_blkpg_req(tcp, &blkpg); |
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break; |
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} |
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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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tprints(", "); |
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if (umove_or_printaddr(tcp, arg, &buts)) |
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break; |
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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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return 1; |
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} else { |
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struct_blk_user_trace_setup buts; |
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if (!syserror(tcp) && !umove(tcp, arg, &buts)) { |
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tprints(", name="); |
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print_quoted_string(buts.name, sizeof(buts.name), |
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QUOTE_0_TERMINATED); |
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} |
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tprints("}"); |
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break; |
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} |
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/* No arguments */ |
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case BLKRRPART: |
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case BLKFLSBUF: |
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case BLKTRACESTART: |
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case BLKTRACESTOP: |
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case BLKTRACETEARDOWN: |
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break; |
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default: |
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return RVAL_DECODED; |
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} |
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return RVAL_DECODED | 1; |
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}
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