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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/* Tests for fcntl.
Copyright (C) 2000 Free Software Foundation, Inc.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
/* Prototype for our test function. */
extern void do_prepare (int argc, char *argv[]);
extern int do_test (int argc, char *argv[]);
/* We have a preparation function. */
#define PREPARE do_prepare
#include "../test-skeleton.c"
/* Name of the temporary files. */
static char *name;
void
do_prepare (int argc, char *argv[])
{
char name_len;
name_len = strlen (test_dir);
name = malloc (name_len + sizeof ("/fcntlXXXXXX"));
mempcpy (mempcpy (name, test_dir, name_len),
"/fcntlXXXXXX", sizeof ("/fcntlXXXXXX"));
add_temp_file (name);
}
int
do_test (int argc, char *argv[])
{
int fd;
int fd2;
int fd3;
struct stat64 st;
int val;
int result = 0;
/* Create the temporary file. */
fd = mkstemp (name);
if (fd == -1)
{
printf ("cannot open temporary file: %m\n");
return 1;
}
if (fstat64 (fd, &st) != 0)
{
printf ("cannot stat test file: %m\n");
return 1;
}
if (! S_ISREG (st.st_mode) || st.st_size != 0)
{
puts ("file not created correctly");
return 1;
}
/* Get the flags with fcntl(). */
val = fcntl (fd, F_GETFL);
if (val == -1)
{
printf ("fcntl(fd, F_GETFL) failed: %m\n");
result = 1;
}
else if ((val & O_ACCMODE) != O_RDWR)
{
puts ("temporary file not opened for read and write");
result = 1;
}
/* Set the flags to something else. */
if (fcntl (fd, F_SETFL, O_RDONLY) == -1)
{
printf ("fcntl(fd, F_SETFL, O_RDONLY) failed: %m\n");
result = 1;
}
val = fcntl (fd, F_GETFL);
if (val == -1)
{
printf ("fcntl(fd, F_GETFL) after F_SETFL failed: %m\n");
result = 1;
}
else if ((val & O_ACCMODE) != O_RDWR)
{
puts ("temporary file access mode changed");
result = 1;
}
/* Set the flags to something else. */
if (fcntl (fd, F_SETFL, O_APPEND) == -1)
{
printf ("fcntl(fd, F_SETFL, O_APPEND) failed: %m\n");
result = 1;
}
val = fcntl (fd, F_GETFL);
if (val == -1)
{
printf ("fcntl(fd, F_GETFL) after second F_SETFL failed: %m\n");
result = 1;
}
else if ((val & O_APPEND) == 0)
{
puts ("O_APPEND not set");
result = 1;
}
val = fcntl (fd, F_GETFD);
if (val == -1)
{
printf ("fcntl(fd, F_GETFD) failed: %m\n");
result = 1;
}
else if (fcntl (fd, F_SETFD, val | FD_CLOEXEC) == -1)
{
printf ("fcntl(fd, F_SETFD, FD_CLOEXEC) failed: %m\n");
result = 1;
}
else
{
val = fcntl (fd, F_GETFD);
if (val == -1)
{
printf ("fcntl(fd, F_GETFD) after F_SETFD failed: %m\n");
result = 1;
}
else if ((val & FD_CLOEXEC) == 0)
{
puts ("FD_CLOEXEC not set");
result = 1;
}
}
/* Get a number of a free descriptor. If /dev/null is not available
don't continue testing. */
fd2 = open (_PATH_DEVNULL, O_RDWR);
if (fd2 == -1)
return result;
close (fd2);
fd3 = fcntl (fd, F_DUPFD, fd2 + 1);
if (fd3 == -1)
{
printf ("fcntl(fd, F_DUPFD, %d) failed: %m\n", fd2 + 1);
result = 1;
}
else if (fd3 <= fd2)
{
printf ("F_DUPFD returned %d which is not larger than %d\n", fd3, fd2);
result = 1;
}
if (fd3 != -1)
{
val = fcntl (fd3, F_GETFD);
if (val == -1)
{
printf ("fcntl(fd3, F_GETFD) after F_DUPFD failed: %m\n");
result = 1;
}
else if ((val & FD_CLOEXEC) != 0)
{
puts ("FD_CLOEXEC still set");
result = 1;
}
close (fd3);
}
return result;
}
|
