1 | /* Copyright (C) 1997-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | |
22 | static void |
23 | write_data (FILE *stream) |
24 | { |
25 | int i; |
26 | for (i=0; i<100; i++) |
27 | fprintf (stream, "%d\n" , i); |
28 | if (ferror (stream: stream)) |
29 | { |
30 | fprintf (stderr, "Output to stream failed.\n" ); |
31 | exit (1); |
32 | } |
33 | } |
34 | |
35 | static void |
36 | read_data (FILE *stream) |
37 | { |
38 | int i, j; |
39 | |
40 | for (i=0; i<100; i++) |
41 | { |
42 | if (fscanf (stream: stream, format: "%d\n" , &j) != 1 || j != i) |
43 | { |
44 | if (ferror (stream: stream)) |
45 | perror ("fscanf" ); |
46 | puts (s: "Test FAILED!" ); |
47 | exit (1); |
48 | } |
49 | } |
50 | } |
51 | |
52 | static int |
53 | do_test (void) |
54 | { |
55 | FILE *output, *input; |
56 | int wstatus, rstatus; |
57 | |
58 | /* We must remove this entry to assure the `cat' binary does not use |
59 | the perhaps incompatible new shared libraries. */ |
60 | unsetenv (name: "LD_LIBRARY_PATH" ); |
61 | |
62 | output = popen ("/bin/cat >" OBJPFX "tstpopen.tmp" , "w" ); |
63 | if (output == NULL) |
64 | { |
65 | perror ("popen" ); |
66 | puts (s: "Test FAILED!" ); |
67 | exit (1); |
68 | } |
69 | write_data (stream: output); |
70 | wstatus = pclose (stream: output); |
71 | printf (format: "writing pclose returned %d\n" , wstatus); |
72 | input = popen ("/bin/cat " OBJPFX "tstpopen.tmp" , "r" ); |
73 | if (input == NULL) |
74 | { |
75 | perror (OBJPFX "tstpopen.tmp" ); |
76 | puts (s: "Test FAILED!" ); |
77 | exit (1); |
78 | } |
79 | read_data (stream: input); |
80 | rstatus = pclose (stream: input); |
81 | printf (format: "reading pclose returned %d\n" , rstatus); |
82 | |
83 | remove (OBJPFX "tstpopen.tmp" ); |
84 | |
85 | errno = 0; |
86 | output = popen (command: "/bin/cat" , modes: "m" ); |
87 | if (output != NULL) |
88 | { |
89 | puts (s: "popen called with illegal mode does not return NULL" ); |
90 | puts (s: "Test FAILED!" ); |
91 | exit (1); |
92 | } |
93 | if (errno != EINVAL) |
94 | { |
95 | puts (s: "popen called with illegal mode does not set errno to EINVAL" ); |
96 | puts (s: "Test FAILED!" ); |
97 | exit (1); |
98 | } |
99 | |
100 | puts (s: wstatus | rstatus ? "Test FAILED!" : "Test succeeded." ); |
101 | return (wstatus | rstatus); |
102 | } |
103 | |
104 | #define TEST_FUNCTION do_test () |
105 | #include "../test-skeleton.c" |
106 | |