X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-select-fd.c;h=4527a2fb49bffbeae6873ee6028313897cc4c670;hb=6d273bef42e648ae9bd1d60923d2a4c8fc5dca94;hp=d362170a87ac5aa32d8d665ebbfded8ec84cb5ef;hpb=69374b85907050e3c6d8f845d5c9846c0fb581de;p=gnulib.git diff --git a/tests/test-select-fd.c b/tests/test-select-fd.c index d362170a8..4527a2fb4 100644 --- a/tests/test-select-fd.c +++ b/tests/test-select-fd.c @@ -1,5 +1,5 @@ /* Test of select() substitute, reading or writing from a given file descriptor. - Copyright (C) 2008 Free Software Foundation, Inc. + Copyright (C) 2008, 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 @@ -25,42 +25,48 @@ int main (int argc, char *argv[]) { - if (argc == 3) + if (argc == 4) { char mode = argv[1][0]; if (mode == 'r' || mode == 'w') - { - int fd = atoi (argv[2]); + { + int fd = atoi (argv[2]); - if (fd >= 0) - { - fd_set fds; - struct timeval timeout; - int ret; + if (fd >= 0) + { + const char *result_file_name = argv[3]; + FILE *result_file = fopen (result_file_name, "wb"); - 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 (stderr, "%d\n", ret); - exit (0); - } - } + 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\n"); + fprintf (stderr, "Usage: test-select-fd mode fd result-file-name\n"); exit (1); }