1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/* COVERAGE: preadv preadv2 */
#define _GNU_SOURCE
#define _BSD_SOURCE
#define _DEFAULT_SOURCE
#define _LARGEFILE64_SOURCE
#define _ISOC99_SOURCE /* Needed for LLONG_MAX on RHEL5 */
#define _FILE_OFFSET_BITS 64
#define _XOPEN_SOURCE 500
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <limits.h>
#include <linux/unistd.h>
#include <sys/uio.h>
#include <sys/syscall.h>
#include <endian.h>
#include <linux/fs.h>
#ifdef __NR_preadv2
#define LO_HI_LONG(val) \
(unsigned long) val, \
(unsigned long) ((((u_int64_t) (val)) >> (sizeof (long) * 4)) >> (sizeof (long) * 4))
static inline ssize_t
__preadv2(int fd, const struct iovec *iov, int iovcnt, loff_t offset, int flags)
{
return syscall(__NR_preadv2, fd, iov, iovcnt,
LO_HI_LONG(offset), flags);
}
#endif
int main()
{
#ifdef __NR_preadv
int fd;
struct iovec rd_iovec[3];
char buf[64];
fd = open("foobar1", O_WRONLY|O_CREAT, 0666);
//staptest// [[[[open (!!!!openat (AT_FDCWD, ]]]]"foobar1", O_WRONLY|O_CREAT[[[[.O_LARGEFILE]]]]?, 0666) = NNNN
memset(buf, (int)'B', sizeof(buf));
write(fd, buf, sizeof(buf));
//staptest// write (NNNN, "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"..., 64) = 64
close(fd);
//staptest// close (NNNN) = 0
fd = open("foobar1", O_RDONLY);
//staptest// [[[[open (!!!!openat (AT_FDCWD, ]]]]"foobar1", O_RDONLY[[[[.O_LARGEFILE]]]]?) = NNNN
rd_iovec[0].iov_base = buf;
rd_iovec[0].iov_len = sizeof(buf);
rd_iovec[1].iov_base = NULL;
rd_iovec[1].iov_len = 0;
rd_iovec[2].iov_base = NULL;
rd_iovec[2].iov_len = 0;
preadv(fd, rd_iovec, 0, 0);
//staptest// preadv (NNNN, XXXX, 0, 0x0) = 0
memset(buf, 0x0, sizeof(buf));
preadv(fd, rd_iovec, 3, 0);
//staptest// preadv (NNNN, XXXX, 3, 0x0) = 64
memset(buf, 0x0, sizeof(buf));
preadv(fd, rd_iovec, 3, 32);
//staptest// preadv (NNNN, XXXX, 3, 0x20) = 32
rd_iovec[0].iov_len = -1;
preadv(fd, rd_iovec, 1, 0);
//staptest// preadv (NNNN, XXXX, 1, 0x0) = -NNNN (EINVAL)
rd_iovec[0].iov_base = (char *)-1;
rd_iovec[0].iov_len = sizeof(buf);
preadv(fd, rd_iovec, 1, 0);
// On 64-bit platforms, we get a EFAULT. On 32-on-64 bits, we
// typically get a 0.
//staptest// preadv (NNNN, XXXX, 1, 0x0) = [[[[0!!!!-NNNN (EFAULT)]]]]
rd_iovec[0].iov_base = buf;
rd_iovec[0].iov_len = sizeof(buf);
preadv(-1, rd_iovec, 1, 0);
//staptest// preadv (-1, XXXX, 1, 0x0) = -NNNN (EBADF)
preadv(fd, rd_iovec, -1, 0);
//staptest// preadv (NNNN, XXXX, -1, 0x0) = -NNNN (EINVAL)
close (fd);
//staptest// close (NNNN) = 0
mkdir("dir1", S_IREAD|S_IWRITE|S_IEXEC);
//staptest// [[[[mkdir (!!!!mkdirat (AT_FDCWD, ]]]]"dir1", 0700) = 0
fd = open("dir1", O_RDONLY);
//staptest// [[[[open (!!!!openat (AT_FDCWD, ]]]]"dir1", O_RDONLY[[[[|O_LARGEFILE]]]]?) = NNNN
preadv(fd, rd_iovec, 1, 0);
//staptest// preadv (NNNN, XXXX, 1, 0x0) = -NNNN (EISDIR)
close (fd);
//staptest// close (NNNN) = 0
preadv(-1, rd_iovec, 1, -1);
//staptest// preadv (-1, XXXX, 1, 0xffffffffffffffff) = -NNNN
preadv(-1, rd_iovec, 1, 0x12345678deadbeefLL);
//staptest// preadv (-1, XXXX, 1, 0x12345678deadbeef) = -NNNN
preadv(-1, rd_iovec, 1, LLONG_MAX);
//staptest// preadv (-1, XXXX, 1, 0x7fffffffffffffff) = -NNNN
#ifdef __NR_preadv2
fd = open("foobar1", O_WRONLY|O_CREAT, 0666);
//staptest// [[[[open (!!!!openat (AT_FDCWD, ]]]]"foobar1", O_WRONLY|O_CREAT[[[[.O_LARGEFILE]]]]?, 0666) = NNNN
memset(buf, (int)'B', sizeof(buf));
write(fd, buf, sizeof(buf));
//staptest// write (NNNN, "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"..., 64) = 64
close(fd);
//staptest// close (NNNN) = 0
fd = open("foobar1", O_RDONLY);
//staptest// [[[[open (!!!!openat (AT_FDCWD, ]]]]"foobar1", O_RDONLY[[[[.O_LARGEFILE]]]]?) = NNNN
rd_iovec[0].iov_base = buf;
rd_iovec[0].iov_len = sizeof(buf);
rd_iovec[1].iov_base = NULL;
rd_iovec[1].iov_len = 0;
rd_iovec[2].iov_base = NULL;
rd_iovec[2].iov_len = 0;
__preadv2(fd, rd_iovec, 0, 0, 0);
//staptest// preadv2 (NNNN, XXXX, 0, 0x0, 0x0) = 0
memset(buf, 0x0, sizeof(buf));
__preadv2(fd, rd_iovec, 3, 0, 0);
//staptest// preadv2 (NNNN, XXXX, 3, 0x0, 0x0) = 64
memset(buf, 0x0, sizeof(buf));
__preadv2(fd, rd_iovec, 3, 32, 0);
//staptest// preadv2 (NNNN, XXXX, 3, 0x20, 0x0) = 32
rd_iovec[0].iov_len = -1;
__preadv2(fd, rd_iovec, 1, 0, RWF_HIPRI);
//staptest// preadv2 (NNNN, XXXX, 1, 0x0, RWF_HIPRI) = -NNNN (EINVAL)
rd_iovec[0].iov_base = (char *)-1;
rd_iovec[0].iov_len = sizeof(buf);
__preadv2(fd, rd_iovec, 1, 0, 0);
// On 64-bit platforms, we get a EFAULT. On 32-on-64 bits, we
// typically get a 0.
//staptest// preadv2 (NNNN, XXXX, 1, 0x0, 0x0) = [[[[0!!!!-NNNN (EFAULT)]]]]
rd_iovec[0].iov_base = buf;
rd_iovec[0].iov_len = sizeof(buf);
__preadv2(-1, rd_iovec, 1, 0, 0);
//staptest// preadv2 (-1, XXXX, 1, 0x0, 0x0) = -NNNN (EBADF)
__preadv2(fd, rd_iovec, -1, 0, 0);
//staptest// preadv2 (NNNN, XXXX, -1, 0x0, 0x0) = -NNNN (EINVAL)
__preadv2(fd, rd_iovec, 1, 0, -1);
//staptest// preadv2 (NNNN, XXXX, 1, 0x0, RWF_[^ ]+|XXXX) = -NNNN
close (fd);
//staptest// close (NNNN) = 0
__preadv2(-1, rd_iovec, 1, -1, 0);
//staptest// preadv2 (-1, XXXX, 1, 0xffffffffffffffff, 0x0) = -NNNN
__preadv2(-1, rd_iovec, 1, 0x12345678deadbeefLL, 0);
//staptest// preadv2 (-1, XXXX, 1, 0x12345678deadbeef, 0x0) = -NNNN
__preadv2(-1, rd_iovec, 1, LLONG_MAX, 0);
//staptest// preadv2 (-1, XXXX, 1, 0x7fffffffffffffff, 0x0) = -NNNN
#endif
#endif
return 0;
}
|
