diff options
Diffstat (limited to 'lib/libpthread/uthread/uthread_read.c')
| -rw-r--r-- | lib/libpthread/uthread/uthread_read.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/lib/libpthread/uthread/uthread_read.c b/lib/libpthread/uthread/uthread_read.c deleted file mode 100644 index 7cdf9adc08e..00000000000 --- a/lib/libpthread/uthread/uthread_read.c +++ /dev/null @@ -1,116 +0,0 @@ -/* $OpenBSD: uthread_read.c,v 1.10 2010/01/03 23:05:35 fgsch Exp $ */ -/* - * 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 AUTHOR 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. - * - * $FreeBSD: uthread_read.c,v 1.8 1999/08/28 00:03:43 peter 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 -read(int fd, void *buf, size_t nbytes) -{ - struct pthread *curthread = _get_curthread(); - ssize_t ret; - int type; - - /* This is a cancellation point: */ - _thread_enter_cancellation_point(); - - /* POSIX says to do just this: */ - if (nbytes == 0) - ret = 0; - - /* Lock the file descriptor for read: */ - else if ((ret = _FD_LOCK(fd, FD_READ, NULL)) == 0) { - /* Get the read/write mode type: */ - type = _thread_fd_table[fd]->status_flags->flags & O_ACCMODE; - - /* Check if the file is not open for read: */ - if (type != O_RDONLY && type != O_RDWR) { - /* File is not open for read: */ - errno = EBADF; - ret = -1; - } - - /* Perform a non-blocking read syscall: */ - else while ((ret = _thread_sys_read(fd, buf, nbytes)) < 0) { - if ((_thread_fd_table[fd]->status_flags->flags & O_NONBLOCK) == 0 && - (errno == EWOULDBLOCK || errno == EAGAIN)) { - curthread->data.fd.fd = fd; - _thread_kern_set_timeout(_FD_RCVTIMEO(fd)); - - /* Reset the interrupted operation flag: */ - curthread->interrupted = 0; - curthread->closing_fd = 0; - curthread->timeout = 0; - - _thread_kern_sched_state(PS_FDR_WAIT, - __FILE__, __LINE__); - - /* - * Check if the operation was - * interrupted by a signal, - * a closing fd or timed out. - */ - if (curthread->interrupted) { - errno = EINTR; - ret = -1; - break; - } else if (curthread->closing_fd) { - errno = EBADF; - ret = -1; - break; - } else if (curthread->timeout) { - errno = EWOULDBLOCK; - ret = -1; - break; - } - } else { - break; - } - } - _FD_UNLOCK(fd, FD_READ); - } - - /* No longer in a cancellation point: */ - _thread_leave_cancellation_point(); - - return (ret); -} -#endif |