1 /*
2 * Copyright (c) 2014-2016 Dmitry V. Levin <ldv@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
MPERS_PRINTER_DECL(bool,fetch_struct_stat,struct tcb * const tcp,const kernel_ulong_t addr,struct strace_stat * const dst)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