diff options
Diffstat (limited to 'lib/libc_r/uthread/uthread_open.c')
| -rw-r--r-- | lib/libc_r/uthread/uthread_open.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/lib/libc_r/uthread/uthread_open.c b/lib/libc_r/uthread/uthread_open.c new file mode 100644 index 0000000..ead651e --- /dev/null +++ b/lib/libc_r/uthread/uthread_open.c @@ -0,0 +1,82 @@ +/* + * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by John Birrell. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ +#include <stdarg.h> +#include <fcntl.h> +#include <dirent.h> +#ifdef _THREAD_SAFE +#include <pthread.h> +#include "pthread_private.h" + +int +open(const char *path, int flags,...) +{ + int fd; + int mode = 0; + int status; + va_list ap; + + /* Block signals: */ + _thread_kern_sig_block(&status); + + /* Check if the file is being created: */ + if (flags & O_CREAT) { + /* Get the creation mode: */ + va_start(ap, flags); + mode = va_arg(ap, int); + va_end(ap); + } + /* Open the file, forcing it to use non-blocking I/O operations: */ + if ((fd = _thread_sys_open(path, flags | O_NONBLOCK, mode)) < 0) { + } + /* Initialise the file descriptor table entry: */ + else if (_thread_fd_table_init(fd) != 0) { + /* Quietly close the file: */ + _thread_sys_close(fd); + + /* Reset the file descriptor: */ + fd = -1; + } else { + /* + * Save the file open flags so that they can be checked + * later: + */ + _thread_fd_table[fd]->flags = flags; + } + + /* Unblock signals: */ + _thread_kern_sig_unblock(status); + + /* Return the file descriptor or -1 on error: */ + return (fd); +} +#endif |
