1 /* 2 * Copyright (c) 2007 Vladimir Nadvornik <nadvornik (at) suse.cz> 3 * Copyright (c) 2007-2017 Dmitry V. Levin <ldv (at) altlinux.org> 4 * Copyright (c) 2015 Bart Van Assche <bart.vanassche (at) sandisk.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "defs.h" 31 32 #ifdef HAVE_SCSI_SG_H 33 34 #include DEF_MPERS_TYPE(struct_sg_io_hdr) 35 36 # include <scsi/sg.h> 37 38 typedef struct sg_io_hdr struct_sg_io_hdr; 39 40 #endif /* HAVE_SCSI_SG_H */ 41 42 #include MPERS_DEFS 43 44 #include "xlat/sg_io_info.h" 45 46 #ifdef HAVE_SCSI_SG_H 47 # include "xlat/sg_io_dxfer_direction.h" 48 # include "xlat/sg_io_flags.h" 49 50 static void 51 print_sg_io_buffer(struct tcb *const tcp, const kernel_ulong_t addr, 52 const unsigned int data_size, const unsigned int iovec_count) 53 { 54 if (iovec_count) { 55 tprint_iov_upto(tcp, iovec_count, addr, IOV_DECODE_STR, 56 data_size); 57 } else { 58 printstr_ex(tcp, addr, data_size, QUOTE_FORCE_HEX); 59 } 60 } 61 62 static int 63 decode_request(struct tcb *const tcp, const kernel_ulong_t arg) 64 { 65 struct_sg_io_hdr sg_io; 66 static const size_t skip_iid = 67 offsetof(struct_sg_io_hdr, dxfer_direction); 68 69 tprints("{interface_id='S', "); 70 if (umoven_or_printaddr(tcp, arg + skip_iid, sizeof(sg_io) - skip_iid, 71 &sg_io.dxfer_direction)) { 72 tprints("}"); 73 return RVAL_DECODED | 1; 74 } 75 76 tprints("dxfer_direction="); 77 printxval(sg_io_dxfer_direction, sg_io.dxfer_direction, 78 "SG_DXFER_???"); 79 tprintf(", cmd_len=%u, cmdp=", sg_io.cmd_len); 80 print_sg_io_buffer(tcp, ptr_to_kulong(sg_io.cmdp), sg_io.cmd_len, 0); 81 tprintf(", mx_sb_len=%d", sg_io.mx_sb_len); 82 tprintf(", iovec_count=%d", sg_io.iovec_count); 83 tprintf(", dxfer_len=%u", sg_io.dxfer_len); 84 tprintf(", timeout=%u", sg_io.timeout); 85 tprints(", flags="); 86 printflags(sg_io_flags, sg_io.flags, "SG_FLAG_???"); 87 88 if (sg_io.dxfer_direction == SG_DXFER_TO_DEV || 89 sg_io.dxfer_direction == SG_DXFER_TO_FROM_DEV) { 90 tprints(", dxferp="); 91 print_sg_io_buffer(tcp, ptr_to_kulong(sg_io.dxferp), 92 sg_io.dxfer_len, sg_io.iovec_count); 93 } 94 95 struct_sg_io_hdr *entering_sg_io = malloc(sizeof(*entering_sg_io)); 96 if (entering_sg_io) { 97 memcpy(entering_sg_io, &sg_io, sizeof(sg_io)); 98 entering_sg_io->interface_id = (unsigned char) 'S'; 99 set_tcb_priv_data(tcp, entering_sg_io, free); 100 } 101 102 return 1; 103 } 104 105 static int 106 decode_response(struct tcb *const tcp, const kernel_ulong_t arg) 107 { 108 struct_sg_io_hdr *entering_sg_io = get_tcb_priv_data(tcp); 109 struct_sg_io_hdr sg_io; 110 111 if (umove(tcp, arg, &sg_io) < 0) { 112 /* print i/o fields fetched on entering syscall */ 113 if (entering_sg_io->dxfer_direction == SG_DXFER_FROM_DEV) { 114 tprints(", dxferp="); 115 printaddr(ptr_to_kulong(entering_sg_io->dxferp)); 116 } 117 tprints(", sbp="); 118 printaddr(ptr_to_kulong(entering_sg_io->sbp)); 119 return RVAL_DECODED | 1; 120 } 121 122 if (sg_io.interface_id != entering_sg_io->interface_id) { 123 tprintf(" => interface_id=%u", sg_io.interface_id); 124 return RVAL_DECODED | 1; 125 } 126 127 if (sg_io.dxfer_direction == SG_DXFER_FROM_DEV || 128 sg_io.dxfer_direction == SG_DXFER_TO_FROM_DEV) { 129 uint32_t din_len = sg_io.dxfer_len; 130 131 if (sg_io.resid > 0 && (unsigned int) sg_io.resid <= din_len) 132 din_len -= sg_io.resid; 133 if (sg_io.dxfer_direction == SG_DXFER_FROM_DEV) { 134 tprints(", dxferp="); 135 } else if (din_len) { 136 tprints(" => dxferp="); 137 } 138 if (sg_io.dxfer_direction == SG_DXFER_FROM_DEV || din_len) { 139 print_sg_io_buffer(tcp, ptr_to_kulong(sg_io.dxferp), 140 din_len, sg_io.iovec_count); 141 } 142 } 143 tprintf(", status=%#x", sg_io.status); 144 tprintf(", masked_status=%#x", sg_io.masked_status); 145 tprintf(", msg_status=%#x", sg_io.msg_status); 146 tprintf(", sb_len_wr=%u, sbp=", sg_io.sb_len_wr); 147 print_sg_io_buffer(tcp, ptr_to_kulong(sg_io.sbp), sg_io.sb_len_wr, 0); 148 tprintf(", host_status=%#x", sg_io.host_status); 149 tprintf(", driver_status=%#x", sg_io.driver_status); 150 tprintf(", resid=%d", sg_io.resid); 151 tprintf(", duration=%u", sg_io.duration); 152 tprints(", info="); 153 printflags(sg_io_info, sg_io.info, "SG_INFO_???"); 154 155 return RVAL_DECODED | 1; 156 } 157 158 #else /* !HAVE_SCSI_SG_H */ 159 160 static int 161 decode_request(struct tcb *const tcp, const kernel_ulong_t arg) 162 { 163 tprints("{interface_id='S', ...}"); 164 return RVAL_DECODED | 1; 165 } 166 167 static int 168 decode_response(struct tcb *const tcp, const kernel_ulong_t arg) 169 { 170 return 0; 171 } 172 173 #endif 174 175 MPERS_PRINTER_DECL(int, decode_sg_io_v3, 176 struct tcb *const tcp, const kernel_ulong_t arg) 177 { 178 return entering(tcp) ? decode_request(tcp, arg) 179 : decode_response(tcp, arg); 180 } 181
