test_write.c
上传用户:mei_mei897
上传日期:2007-01-05
资源大小:82k
文件大小:2k
- /* -------------------------------------------------------------------- */
- /* SMS Client, send messages to mobile phones and pagers */
- /* */
- /* test_write.c */
- /* */
- /* Copyright (C) 1997,1998 Angelo Masci */
- /* */
- /* This library is free software; you can redistribute it and/or */
- /* modify it under the terms of the GNU Library General Public */
- /* License as published by the Free Software Foundation; either */
- /* version 2 of the License, or (at your option) any later version. */
- /* */
- /* This 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 */
- /* Library General Public License for more details. */
- /* */
- /* You should have received a copy of the GNU Library General Public */
- /* License along with this library; if not, write to the Free */
- /* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
- /* */
- /* You can contact the author at this e-mail address: */
- /* */
- /* angelo@styx.demon.co.uk */
- /* */
- /* -------------------------------------------------------------------- */
- /* $Id$
- -------------------------------------------------------------------- */
- #include <stdio.h>
- #include <unistd.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <fcntl.h>
- /* -------------------------------------------------------------------- */
- /* -------------------------------------------------------------------- */
- int main(int argc, char **argv)
- {
- int fd;
- if (argc != 2)
- { fprintf(stderr, "Usage: %s <file>n", argv[0]);
- exit(1);
- }
- fd = open(argv[1], O_RDWR|O_NONBLOCK);
- if (fd == -1)
- { fprintf(stderr, "Error: Opening file '%s'n", argv[1]);
- exit(1);
- }
-
- if (write(fd, " ", 1) == -1)
- { fprintf(stderr, "Error: write() failedn");
- exit(1);
- }
- close(fd);
- return 0;
- }