diff options
Diffstat (limited to 'lib/libpthread/thread/thr_write.c')
| -rw-r--r-- | lib/libpthread/thread/thr_write.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/lib/libpthread/thread/thr_write.c b/lib/libpthread/thread/thr_write.c deleted file mode 100644 index 23cef52b6f2d..000000000000 --- a/lib/libpthread/thread/thr_write.c +++ /dev/null @@ -1,134 +0,0 @@ -/* - * Copyright (c) 1995-1998 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. - * - * $Id: uthread_write.c,v 1.9 1998/06/14 09:36:11 jb Exp $ - * - */ -#include <sys/types.h> -#include <sys/fcntl.h> -#include <sys/uio.h> -#include <errno.h> -#include <unistd.h> -#ifdef _THREAD_SAFE -#include <pthread.h> -#include "pthread_private.h" - -ssize_t -write(int fd, const void *buf, size_t nbytes) -{ - int blocking; - int type; - ssize_t n; - ssize_t num = 0; - ssize_t ret; - - /* POSIX says to do just this: */ - if (nbytes == 0) - return (0); - - /* Lock the file descriptor for write: */ - if ((ret = _FD_LOCK(fd, FD_WRITE, NULL)) == 0) { - /* Get the read/write mode type: */ - type = _thread_fd_table[fd]->flags & O_ACCMODE; - - /* Check if the file is not open for write: */ - if (type != O_WRONLY && type != O_RDWR) { - /* File is not open for write: */ - errno = EBADF; - _FD_UNLOCK(fd, FD_WRITE); - return (-1); - } - - /* Check if file operations are to block */ - blocking = ((_thread_fd_table[fd]->flags & O_NONBLOCK) == 0); - - /* - * Loop while no error occurs and until the expected number - * of bytes are written if performing a blocking write: - */ - while (ret == 0) { - /* Perform a non-blocking write syscall: */ - n = _thread_sys_write(fd, buf + num, nbytes - num); - - /* Check if one or more bytes were written: */ - if (n > 0) - /* - * Keep a count of the number of bytes - * written: - */ - num += n; - - /* - * If performing a blocking write, check if the - * write would have blocked or if some bytes - * were written but there are still more to - * write: - */ - if (blocking && ((n < 0 && (errno == EWOULDBLOCK || - errno == EAGAIN)) || (n >= 0 && num < nbytes))) { - _thread_run->data.fd.fd = fd; - _thread_kern_set_timeout(NULL); - - /* Reset the interrupted operation flag: */ - _thread_run->interrupted = 0; - - _thread_kern_sched_state(PS_FDW_WAIT, - __FILE__, __LINE__); - - /* - * Check if the operation was - * interrupted by a signal - */ - if (_thread_run->interrupted) { - /* Return an error: */ - ret = -1; - } - - /* - * If performing a non-blocking write or if an - * error occurred, just return whatever the write - * syscall did: - */ - } else if (!blocking || n < 0) { - /* A non-blocking call might return zero: */ - ret = n; - break; - - /* Check if the write has completed: */ - } else if (num >= nbytes) - /* Return the number of bytes written: */ - ret = num; - } - _FD_UNLOCK(fd, FD_RDWR); - } - return (ret); -} -#endif |