diff options
Diffstat (limited to 'gnulib/tests/test-popen.h')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/tests/test-popen.h | 93 |
2 files changed, 93 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 4fc10daa05477586fea99b6b3ca02a87d1102fa diff --git a/gnulib/tests/test-popen.h b/gnulib/tests/test-popen.h new file mode 100644 index 00000000..f3df9f94 --- /dev/null +++ b/gnulib/tests/test-popen.h @@ -0,0 +1,93 @@ +/* Test of opening a subcommand stream. + Copyright (C) 2009, 2010 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* Written by Eric Blake <ebb9@byu.net>, 2009. */ + +/* Include <config.h> and a form of <stdio.h> first. */ + +/* Helpers. */ +#include <stdlib.h> +#include <string.h> +#include <sys/wait.h> +#include <unistd.h> + +#include "macros.h" + +int +main (int argc, char **argv) +{ + size_t len; + char *cmd; + int i; + + /* Children - use the pipe. */ + if (argc > 1) + { + if (*argv[1] == 'r') /* Parent is reading, so we write. */ + ASSERT (putchar ('c') == 'c'); + else /* Parent is writing, so we read. */ + ASSERT (getchar () == 'p'); + /* Test that parent can read non-zero status. */ + return 42; + } + + /* Parent - create read and write child, once under normal + circumstances and once with stdin and stdout closed. */ + len = strlen (argv[0]); + cmd = malloc (len + 3); /* Adding " r" and NUL. */ + ASSERT (cmd); + /* We count on argv[0] not containing any shell metacharacters. */ + strcpy (cmd, argv[0]); + cmd[len] = ' '; + cmd[len + 2] = '\0'; + for (i = 0; i < 2; i++) + { + FILE *child; + int status; + + if (i) + { + ASSERT (fclose (stdin) == 0); + ASSERT (fclose (stdout) == 0); + } + + cmd[len + 1] = 'r'; + ASSERT (child = popen (cmd, "r")); + ASSERT (fgetc (child) == 'c'); + status = pclose (child); + ASSERT (WIFEXITED (status)); + ASSERT (WEXITSTATUS (status) == 42); + if (i) + { + ASSERT (dup2 (STDIN_FILENO, STDIN_FILENO) == -1); + ASSERT (dup2 (STDOUT_FILENO, STDOUT_FILENO) == -1); + } + + cmd[len + 1] = 'w'; + ASSERT (child = popen (cmd, "w")); + ASSERT (fputc ('p', child) == 'p'); + status = pclose (child); + ASSERT (WIFEXITED (status)); + ASSERT (WEXITSTATUS (status) == 42); + if (i) + { + ASSERT (dup2 (STDIN_FILENO, STDIN_FILENO) == -1); + ASSERT (dup2 (STDOUT_FILENO, STDOUT_FILENO) == -1); + } + } + free (cmd); + return 0; +} |