1 /* 2 * Copyright (c) 2014-2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * Copyright (c) 2016-2017 The strace developers. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "defs.h" 30 31 #include DEF_MPERS_TYPE(struct_stat) 32 33 #include "asm_stat.h" 34 35 #if defined MPERS_IS_m32 36 # undef HAVE_STRUCT_STAT 37 # undef HAVE_STRUCT_STAT_ST_MTIME_NSEC 38 # ifdef HAVE_M32_STRUCT_STAT 39 # define HAVE_STRUCT_STAT 1 40 # ifdef HAVE_M32_STRUCT_STAT_ST_MTIME_NSEC 41 # define HAVE_STRUCT_STAT_ST_MTIME_NSEC 1 42 # endif /* HAVE_M32_STRUCT_STAT_ST_MTIME_NSEC */ 43 # endif /* HAVE_M32_STRUCT_STAT */ 44 #elif defined MPERS_IS_mx32 45 # undef HAVE_STRUCT_STAT 46 # undef HAVE_STRUCT_STAT_ST_MTIME_NSEC 47 # ifdef HAVE_MX32_STRUCT_STAT 48 # define HAVE_STRUCT_STAT 1 49 # ifdef HAVE_MX32_STRUCT_STAT_ST_MTIME_NSEC 50 # define HAVE_STRUCT_STAT_ST_MTIME_NSEC 1 51 # endif /* HAVE_MX32_STRUCT_STAT_ST_MTIME_NSEC */ 52 # endif /* HAVE_MX32_STRUCT_STAT */ 53 #else /* !MPERS_IS_m32 && !MPERS_IS_mx32 */ 54 # define HAVE_STRUCT_STAT 1 55 #endif 56 57 #ifndef HAVE_STRUCT_STAT 58 struct stat {}; 59 #endif 60 61 typedef struct stat struct_stat; 62 63 #include MPERS_DEFS 64 65 #include "stat.h" 66 67 #ifdef HAVE_STRUCT_STAT_ST_MTIME_NSEC 68 # define TIME_NSEC(arg) zero_extend_signed_to_ull(arg) 69 # define HAVE_NSEC true 70 #else 71 # define TIME_NSEC(arg) 0 72 # define HAVE_NSEC false 73 #endif 74 75 MPERS_PRINTER_DECL(bool, fetch_struct_stat, 76 struct tcb *const tcp, const kernel_ulong_t addr, 77 struct strace_stat *const dst) 78 { 79 #ifdef HAVE_STRUCT_STAT 80 struct_stat buf; 81 if (umove_or_printaddr(tcp, addr, &buf)) 82 return false; 83 84 dst->dev = zero_extend_signed_to_ull(buf.st_dev); 85 dst->ino = zero_extend_signed_to_ull(buf.st_ino); 86 dst->rdev = zero_extend_signed_to_ull(buf.st_rdev); 87 dst->size = zero_extend_signed_to_ull(buf.st_size); 88 dst->blocks = zero_extend_signed_to_ull(buf.st_blocks); 89 dst->blksize = zero_extend_signed_to_ull(buf.st_blksize); 90 dst->mode = zero_extend_signed_to_ull(buf.st_mode); 91 dst->nlink = zero_extend_signed_to_ull(buf.st_nlink); 92 dst->uid = zero_extend_signed_to_ull(buf.st_uid); 93 dst->gid = zero_extend_signed_to_ull(buf.st_gid); 94 dst->atime = sign_extend_unsigned_to_ll(buf.st_atime); 95 dst->ctime = sign_extend_unsigned_to_ll(buf.st_ctime); 96 dst->mtime = sign_extend_unsigned_to_ll(buf.st_mtime); 97 dst->atime_nsec = TIME_NSEC(buf.st_atime_nsec); 98 dst->ctime_nsec = TIME_NSEC(buf.st_ctime_nsec); 99 dst->mtime_nsec = TIME_NSEC(buf.st_mtime_nsec); 100 dst->has_nsec = HAVE_NSEC; 101 return true; 102 #else /* !HAVE_STRUCT_STAT */ 103 printaddr(addr); 104 return false; 105 #endif 106 } 107
