1 /*
2 * Copyright (c) 2014-2016 Dmitry V. Levin <ldv@altlinux.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "defs.h"
29
30 #include DEF_MPERS_TYPE(struct_statfs)
31 #include DEF_MPERS_TYPE(struct_statfs64)
32
33 #include <linux/types.h>
34 #include <asm/statfs.h>
35 typedef struct statfs struct_statfs;
36 typedef struct statfs64 struct_statfs64;
37
38 #include MPERS_DEFS
39
40 #include "statfs.h"
41
MPERS_PRINTER_DECL(bool,fetch_struct_statfs,struct tcb * const tcp,const kernel_ulong_t addr,struct strace_statfs * const p)42 MPERS_PRINTER_DECL(bool, fetch_struct_statfs,
43 struct tcb *const tcp, const kernel_ulong_t addr,
44 struct strace_statfs *const p)
45 {
46 struct_statfs b;
47
48 if (umove_or_printaddr(tcp, addr, &b))
49 return false;
50
51 p->f_type = zero_extend_signed_to_ull(b.f_type);
52 p->f_bsize = zero_extend_signed_to_ull(b.f_bsize);
53 p->f_blocks = zero_extend_signed_to_ull(b.f_blocks);
54 p->f_bfree = zero_extend_signed_to_ull(b.f_bfree);
55 p->f_bavail = zero_extend_signed_to_ull(b.f_bavail);
56 p->f_files = zero_extend_signed_to_ull(b.f_files);
57 p->f_ffree = zero_extend_signed_to_ull(b.f_ffree);
58 #if defined HAVE_STRUCT_STATFS_F_FSID_VAL
59 p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.val[0]);
60 p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.val[1]);
61 #elif defined HAVE_STRUCT_STATFS_F_FSID___VAL
62 p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.__val[0]);
63 p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.__val[1]);
64 #endif
65 p->f_namelen = zero_extend_signed_to_ull(b.f_namelen);
66 #ifdef HAVE_STRUCT_STATFS_F_FRSIZE
67 p->f_frsize = zero_extend_signed_to_ull(b.f_frsize);
68 #endif
69 #ifdef HAVE_STRUCT_STATFS_F_FLAGS
70 p->f_flags = zero_extend_signed_to_ull(b.f_flags);
71 #endif
72
73 return true;
74 }
75
76 #if defined ARM || (defined AARCH64 && defined IN_MPERS)
77 /* See arch/arm/kernel/sys_oabi-compat.c for details. */
78 # define COMPAT_STATFS64_PADDED_SIZE (sizeof(struct_statfs64) + 4)
79 #endif
80
MPERS_PRINTER_DECL(bool,fetch_struct_statfs64,struct tcb * const tcp,const kernel_ulong_t addr,const kernel_ulong_t size,struct strace_statfs * const p)81 MPERS_PRINTER_DECL(bool, fetch_struct_statfs64,
82 struct tcb *const tcp, const kernel_ulong_t addr,
83 const kernel_ulong_t size, struct strace_statfs *const p)
84 {
85 struct_statfs64 b;
86
87 if (sizeof(b) != size
88 #ifdef COMPAT_STATFS64_PADDED_SIZE
89 && sizeof(b) != COMPAT_STATFS64_PADDED_SIZE
90 #endif
91 ) {
92 printaddr(addr);
93 return false;
94 }
95
96 if (umove_or_printaddr(tcp, addr, &b))
97 return false;
98
99 p->f_type = zero_extend_signed_to_ull(b.f_type);
100 p->f_bsize = zero_extend_signed_to_ull(b.f_bsize);
101 p->f_blocks = zero_extend_signed_to_ull(b.f_blocks);
102 p->f_bfree = zero_extend_signed_to_ull(b.f_bfree);
103 p->f_bavail = zero_extend_signed_to_ull(b.f_bavail);
104 p->f_files = zero_extend_signed_to_ull(b.f_files);
105 p->f_ffree = zero_extend_signed_to_ull(b.f_ffree);
106 #if defined HAVE_STRUCT_STATFS64_F_FSID_VAL
107 p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.val[0]);
108 p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.val[1]);
109 #elif defined HAVE_STRUCT_STATFS64_F_FSID___VAL
110 p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.__val[0]);
111 p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.__val[1]);
112 #endif
113 p->f_namelen = zero_extend_signed_to_ull(b.f_namelen);
114 #ifdef HAVE_STRUCT_STATFS64_F_FRSIZE
115 p->f_frsize = zero_extend_signed_to_ull(b.f_frsize);
116 #endif
117 #ifdef HAVE_STRUCT_STATFS64_F_FLAGS
118 p->f_flags = zero_extend_signed_to_ull(b.f_flags);
119 #endif
120
121 return true;
122 }
123