diff options
Diffstat (limited to 'REORG.TODO/stdio-common/test-popen.c')
-rw-r--r-- | REORG.TODO/stdio-common/test-popen.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/REORG.TODO/stdio-common/test-popen.c b/REORG.TODO/stdio-common/test-popen.c new file mode 100644 index 0000000000..44b09fa129 --- /dev/null +++ b/REORG.TODO/stdio-common/test-popen.c @@ -0,0 +1,105 @@ +/* Copyright (C) 1997-2017 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 + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> + +static void +write_data (FILE *stream) +{ + int i; + for (i=0; i<100; i++) + fprintf (stream, "%d\n", i); + if (ferror (stream)) + { + fprintf (stderr, "Output to stream failed.\n"); + exit (1); + } +} + +static void +read_data (FILE *stream) +{ + int i, j; + + for (i=0; i<100; i++) + { + if (fscanf (stream, "%d\n", &j) != 1 || j != i) + { + if (ferror (stream)) + perror ("fscanf"); + puts ("Test FAILED!"); + exit (1); + } + } +} + +static int +do_test (void) +{ + FILE *output, *input; + int wstatus, rstatus; + + /* We must remove this entry to assure the `cat' binary does not use + the perhaps incompatible new shared libraries. */ + unsetenv ("LD_LIBRARY_PATH"); + + output = popen ("/bin/cat >/tmp/tstpopen.tmp", "w"); + if (output == NULL) + { + perror ("popen"); + puts ("Test FAILED!"); + exit (1); + } + write_data (output); + wstatus = pclose (output); + printf ("writing pclose returned %d\n", wstatus); + input = popen ("/bin/cat /tmp/tstpopen.tmp", "r"); + if (input == NULL) + { + perror ("/tmp/tstpopen.tmp"); + puts ("Test FAILED!"); + exit (1); + } + read_data (input); + rstatus = pclose (input); + printf ("reading pclose returned %d\n", rstatus); + + remove ("/tmp/tstpopen.tmp"); + + errno = 0; + output = popen ("/bin/cat", "m"); + if (output != NULL) + { + puts ("popen called with illegal mode does not return NULL"); + puts ("Test FAILED!"); + exit (1); + } + if (errno != EINVAL) + { + puts ("popen called with illegal mode does not set errno to EINVAL"); + puts ("Test FAILED!"); + exit (1); + } + + puts (wstatus | rstatus ? "Test FAILED!" : "Test succeeded."); + return (wstatus | rstatus); +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |