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Diffstat (limited to 'lib/libpthread/uthread/uthread_writev.c')
-rw-r--r--lib/libpthread/uthread/uthread_writev.c246
1 files changed, 0 insertions, 246 deletions
diff --git a/lib/libpthread/uthread/uthread_writev.c b/lib/libpthread/uthread/uthread_writev.c
deleted file mode 100644
index 6c3d41c14f4..00000000000
--- a/lib/libpthread/uthread/uthread_writev.c
+++ /dev/null
@@ -1,246 +0,0 @@
-/* $OpenBSD: uthread_writev.c,v 1.14 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_writev.c,v 1.12 1999/08/28 00:03:55 peter Exp $
- *
- */
-#include <sys/types.h>
-#include <sys/fcntl.h>
-#include <sys/uio.h>
-#include <errno.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#ifdef _THREAD_SAFE
-#include <pthread.h>
-#include "pthread_private.h"
-
-ssize_t
-writev(int fd, const struct iovec * iov, int iovcnt)
-{
- struct pthread *curthread = _get_curthread();
- int blocking;
- int idx = 0;
- int type;
- ssize_t num = 0;
- size_t cnt;
- ssize_t n;
- ssize_t ret;
- struct iovec liov[20];
- struct iovec *p_iov = liov;
-
- /* This is a cancellation point: */
- _thread_enter_cancellation_point();
-
- /* Check if the array size exceeds to compiled in size: */
- if (iovcnt > (int) (sizeof(liov) / sizeof(struct iovec))) {
- /* Allocate memory for the local array: */
- if ((p_iov = (struct iovec *)
- malloc((size_t)iovcnt * sizeof(struct iovec))) == NULL) {
- /* Insufficient memory: */
- errno = ENOMEM;
- _thread_leave_cancellation_point();
- return (-1);
- }
- } else if (iovcnt <= 0) {
- errno = EINVAL;
- _thread_leave_cancellation_point();
- return (-1);
- }
-
- /* Copy the caller's array so that it can be modified locally: */
- memcpy(p_iov,iov,(size_t)iovcnt * sizeof(struct iovec));
-
- /* 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]->status_flags->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);
- if (p_iov != liov)
- free(p_iov);
- _thread_leave_cancellation_point();
- return (-1);
- }
-
- /* Check if file operations are to block */
- blocking = ((_thread_fd_table[fd]->status_flags->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_writev(fd, &p_iov[idx], iovcnt - idx);
-
- /* Check if one or more bytes were written: */
- if (n > 0) {
- /*
- * Keep a count of the number of bytes
- * written:
- */
- num += n;
-
- /*
- * Enter a loop to check if a short write
- * occurred and move the index to the
- * array entry where the short write
- * ended:
- */
- cnt = (size_t)n;
- while (cnt > 0 && idx < iovcnt) {
- /*
- * If the residual count exceeds
- * the size of this vector, then
- * it was completely written:
- */
- if (cnt >= p_iov[idx].iov_len)
- /*
- * Decrement the residual
- * count and increment the
- * index to the next array
- * entry:
- */
- cnt -= p_iov[idx++].iov_len;
- else {
- /*
- * This entry was only
- * partially written, so
- * adjust it's length
- * and base pointer ready
- * for the next write:
- */
- p_iov[idx].iov_len -= cnt;
- p_iov[idx].iov_base =
- (char *)p_iov[idx].iov_base
- + (ptrdiff_t)cnt;
- cnt = 0;
- }
- }
- } else if (n == 0) {
- /*
- * Avoid an infinite loop if the last iov_len is
- * 0.
- */
- while (idx < iovcnt && p_iov[idx].iov_len == 0)
- idx++;
-
- if (idx == iovcnt) {
- ret = num;
- break;
- }
- }
-
- /*
- * 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 && idx < iovcnt))) {
- curthread->data.fd.fd = fd;
- _thread_kern_set_timeout(_FD_SNDTIMEO(fd));
-
- /* Reset the interrupted operation flag: */
- curthread->interrupted = 0;
- curthread->closing_fd = 0;
- curthread->timeout = 0;
-
- _thread_kern_sched_state(PS_FDW_WAIT,
- __FILE__, __LINE__);
-
- /*
- * Check if the operation was
- * interrupted by a signal
- */
- if (curthread->interrupted ||
- curthread->closing_fd ||
- curthread->timeout) {
- if (num > 0) {
- /* Return partial success: */
- ret = num;
- } else {
- /* Return an error: */
- if (curthread->closing_fd)
- errno = EBADF;
- else if (curthread->interrupted)
- errno = EINTR;
- else
- errno = EWOULDBLOCK;
- ret = -1;
- }
- }
-
- /*
- * If performing a non-blocking write,
- * just return whatever the write syscall did:
- */
- } else if (!blocking) {
- /* A non-blocking call might return zero: */
- ret = n;
- break;
-
- /*
- * If there was an error, return partial success
- * (if any bytes were written) or else the error:
- */
- } else if (n < 0) {
- if (num > 0)
- ret = num;
- else
- ret = n;
-
- /* Check if the write has completed: */
- } else if (idx == iovcnt)
- /* Return the number of bytes written: */
- ret = num;
- }
- _FD_UNLOCK(fd, FD_WRITE);
- }
-
- /* If memory was allocated for the array, free it: */
- if (p_iov != liov)
- free(p_iov);
-
- /* No longer in a cancellation point: */
- _thread_leave_cancellation_point();
-
- return (ret);
-}
-#endif
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