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
|
/* Test that spawn file action functions work without file limit.
Copyright (C) 2016-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <fcntl.h>
#include <spawn.h>
#include <stdbool.h>
#include <stdio.h>
#include <sys/resource.h>
#include <unistd.h>
/* _SC_OPEN_MAX value. */
static long maxfd;
/* A positive but unused file descriptor, used for testing
purposes. */
static int invalid_fd;
/* Indicate that errors have been encountered. */
static bool errors;
static posix_spawn_file_actions_t actions;
static void
one_test (const char *name, int (*func) (int), int fd,
bool expect_success)
{
int ret = func (fd);
if (expect_success)
{
if (ret != 0)
{
errno = ret;
printf ("error: posix_spawn_file_actions_%s (%d): %m\n", name, fd);
errors = true;
}
}
else if (ret != EBADF)
{
if (ret == 0)
printf ("error: posix_spawn_file_actions_%s (%d):"
" unexpected success\n", name, fd);
else
{
errno = ret;
printf ("error: posix_spawn_file_actions_%s (%d): %m\n", name, fd);
}
errors = true;
}
}
static void
all_tests (const char *name, int (*func) (int))
{
one_test (name, func, 0, true);
one_test (name, func, invalid_fd, true);
one_test (name, func, -1, false);
one_test (name, func, -2, false);
if (maxfd >= 0)
one_test (name, func, maxfd, false);
}
static int
addopen (int fd)
{
return posix_spawn_file_actions_addopen
(&actions, fd, "/dev/null", O_RDONLY, 0);
}
static int
adddup2 (int fd)
{
return posix_spawn_file_actions_adddup2 (&actions, fd, 1);
}
static int
adddup2_reverse (int fd)
{
return posix_spawn_file_actions_adddup2 (&actions, 1, fd);
}
static int
addclose (int fd)
{
return posix_spawn_file_actions_addclose (&actions, fd);
}
static void
all_functions (void)
{
all_tests ("addopen", addopen);
all_tests ("adddup2", adddup2);
all_tests ("adddup2", adddup2_reverse);
all_tests ("adddup2", addclose);
}
static int
do_test (void)
{
/* Try to eliminate the file descriptor limit. */
{
struct rlimit limit;
if (getrlimit (RLIMIT_NOFILE, &limit) < 0)
{
printf ("error: getrlimit: %m\n");
return 1;
}
limit.rlim_cur = RLIM_INFINITY;
if (setrlimit (RLIMIT_NOFILE, &limit) < 0)
printf ("warning: setrlimit: %m\n");
}
maxfd = sysconf (_SC_OPEN_MAX);
printf ("info: _SC_OPEN_MAX: %ld\n", maxfd);
invalid_fd = dup (0);
if (invalid_fd < 0)
{
printf ("error: dup: %m\n");
return 1;
}
if (close (invalid_fd) < 0)
{
printf ("error: close: %m\n");
return 1;
}
int ret = posix_spawn_file_actions_init (&actions);
if (ret != 0)
{
errno = ret;
printf ("error: posix_spawn_file_actions_init: %m\n");
return 1;
}
all_functions ();
ret = posix_spawn_file_actions_destroy (&actions);
if (ret != 0)
{
errno = ret;
printf ("error: posix_spawn_file_actions_destroy: %m\n");
return 1;
}
return errors;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
|
