From 29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:21:29 +0200 Subject: Adding upstream version 1:0.1.9998svn3589+dfsg. Signed-off-by: Daniel Baumann --- src/grep/gnulib-tests/test-select-fd.c | 72 ++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 src/grep/gnulib-tests/test-select-fd.c (limited to 'src/grep/gnulib-tests/test-select-fd.c') diff --git a/src/grep/gnulib-tests/test-select-fd.c b/src/grep/gnulib-tests/test-select-fd.c new file mode 100644 index 0000000..229e821 --- /dev/null +++ b/src/grep/gnulib-tests/test-select-fd.c @@ -0,0 +1,72 @@ +/* Test of select() substitute, reading or writing from a given file descriptor. + Copyright (C) 2008-2021 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 . */ + +/* Written by Bruno Haible , 2008. */ + +#include + +#include +#include +#include + +int +main (int argc, char *argv[]) +{ + if (argc == 4) + { + char mode = argv[1][0]; + + if (mode == 'r' || mode == 'w') + { + int fd = atoi (argv[2]); + + if (fd >= 0) + { + const char *result_file_name = argv[3]; + FILE *result_file = fopen (result_file_name, "wb"); + + if (result_file != NULL) + { + fd_set fds; + struct timeval timeout; + int ret; + + FD_ZERO (&fds); + FD_SET (fd, &fds); + timeout.tv_sec = 0; + timeout.tv_usec = 10000; + ret = (mode == 'r' + ? select (fd + 1, &fds, NULL, NULL, &timeout) + : select (fd + 1, NULL, &fds, NULL, &timeout)); + if (ret < 0) + { + perror ("select failed"); + exit (1); + } + if ((ret == 0) != ! FD_ISSET (fd, &fds)) + { + fprintf (stderr, "incorrect return value\n"); + exit (1); + } + fprintf (result_file, "%d\n", ret); + exit (0); + } + } + } + } + fprintf (stderr, "Usage: test-select-fd mode fd result-file-name\n"); + exit (1); +} -- cgit v1.2.3