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-rw-r--r--file_io/unix/readwrite.c260
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diff --git a/file_io/unix/readwrite.c b/file_io/unix/readwrite.c
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-/* ====================================================================
- * Copyright (c) 1999 The Apache Group. 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 acknowledgment:
- * "This product includes software developed by the Apache Group
- * for use in the Apache HTTP server project (http://www.apache.org/)."
- *
- * 4. The names "Apache Server" and "Apache Group" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- * nor may "Apache" appear in their names without prior written
- * permission of the Apache Group.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the Apache Group
- * for use in the Apache HTTP server project (http://www.apache.org/)."
- *
- * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
- * EXPRESSED 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 APACHE GROUP OR
- * ITS 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.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Group.
- * For more information on the Apache Group and the Apache HTTP server
- * project, please see <http://www.apache.org/>.
- *
- */
-
-#include "fileio.h"
-#include "apr_file_io.h"
-#include "apr_general.h"
-#include "apr_lib.h"
-#include "apr_errno.h"
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_SYS_UIO_H
-#include <sys/uio.h>
-#endif
-
-/* ***APRDOC********************************************************
- * ap_status_t ap_read(ap_file_t *, void *, ap_ssize_t *)
- * Read data from the specified file.
- * arg 1) The file descriptor to read from.
- * arg 2) The buffer to store the data to.
- * arg 3) The number of bytes to read.
- * NOTE: ap_read will read up to the specified number of bytes, but never
- * more. If there isn't enough data to fill that number of bytes, all of
- * the available data is read. The third argument is modified to reflect the
- * number of bytes read.
- */
-ap_status_t ap_read(struct file_t *thefile, void *buf, ap_ssize_t *nbytes)
-{
- ap_ssize_t rv;
-
- if (thefile->filedes < 0) {
- *nbytes = -1;
- return APR_EBADF;
- }
-
- if (thefile->buffered) {
- rv = fread(buf, *nbytes, 1, thefile->filehand);
- }
- else {
- rv = read(thefile->filedes, buf, *nbytes);
- }
-
- if ((*nbytes != rv) && (errno != EINTR) && !thefile->buffered) {
- thefile->eof_hit = 1;
- }
- *nbytes = rv;
- return APR_SUCCESS;
-}
-
-/* ***APRDOC********************************************************
- * ap_status_t ap_write(ap_file_t *, void *, ap_ssize_t *)
- * Write data to the specified file.
- * arg 1) The file descriptor to write to.
- * arg 2) The buffer which contains the data.
- * arg 3) The number of bytes to write.
- * NOTE: ap_write will write up to the specified number of bytes, but never
- * more. If the OS cannot write that many bytes, it will write as many as it
- * can. The third argument is modified to reflect the * number of bytes
- * written.
- */
-ap_status_t ap_write(struct file_t *thefile, void *buf, ap_ssize_t *nbytes)
-{
- ap_size_t rv;
- struct stat info;
-
- if (thefile->filedes < 0) {
- *nbytes = -1;
- return APR_EBADF;
- }
-
- if (thefile->buffered) {
- rv = fwrite(buf, *nbytes, 1, thefile->filehand);
- }
- else {
- rv = write(thefile->filedes, buf, *nbytes);
- }
-
- if (strcmp(thefile->fname, "PIPE")) {
- if (stat(thefile->fname, &info) == 0) {
- thefile->size = info.st_size;
- thefile->atime = info.st_atime;
- thefile->mtime = info.st_mtime;
- thefile->ctime = info.st_ctime;
- }
- }
- *nbytes = rv;
- return APR_SUCCESS;
-}
-
-/* ***APRDOC********************************************************
- * ap_status_t ap_writev(ap_file_t *, ap_iovec_t *, ap_ssize_t *)
- * Write data from ap_iovec array to the specified file.
- * arg 1) The file descriptor to write to.
- * arg 2) The array from which to get the data to write to the file.
- * arg 3) The number of elements in the ap_iovec array. This must be
- * smaller than AP_MAX_IOVEC_SIZE. If it isn't, the function will
- * fail with APR_EINVAL.
- * NOTE: The third arguement is updated with the number of bytes actually
- * written on function exit.
- */
-#ifdef HAVE_WRITEV
-ap_status_t ap_writev(struct file_t *thefile, const struct iovec_t *vec, ap_ssize_t *iocnt)
-{
- int bytes;
- if ((bytes = writev(thefile->filedes, vec->iovec, *iocnt)) < 0) {
- *iocnt = bytes;
- return errno;
- }
- else {
- *iocnt = bytes;
- return APR_SUCCESS;
- }
-}
-#endif
-
-/* ***APRDOC********************************************************
- * ap_status_t ap_putc(ap_file_t *, char)
- * put a character into the specified file.
- * arg 1) The file descriptor to write to
- * arg 2) The character to write.
- */
-ap_status_t ap_putc(ap_file_t *thefile, char ch)
-{
- if (thefile->buffered) {
- if (fputc(ch, thefile->filehand) == ch) {
- return APR_SUCCESS;
- }
- return errno;
- }
- if (write(thefile->filedes, &ch, 1) != 1) {
- return errno;
- }
- return APR_SUCCESS;
-}
-
-/* ***APRDOC********************************************************
- * ap_status_t ap_getc(ap_file_t *, char *)
- * put a character into the specified file.
- * arg 1) The file descriptor to write to
- * arg 2) The character to write.
- */
-ap_status_t ap_getc(ap_file_t *thefile, char *ch)
-{
- ssize_t rv;
-
- if (thefile->buffered) {
- if ((*ch) = fgetc(thefile->filehand)) {
- return APR_SUCCESS;
- }
- if (feof(thefile->filehand)) {
- return APR_EOF;
- }
- return errno;
- }
- rv = read(thefile->filedes, ch, 1);
- if (rv == 0) {
- thefile->eof_hit = TRUE;
- return APR_EOF;
- }
- else if (rv != 1) {
- return errno;
- }
- return APR_SUCCESS;
-}
-
-static int printf_flush(ap_vformatter_buff_t *vbuff)
-{
- /* I would love to print this stuff out to the file, but I will
- * get that working later. :) For now, just return.
- */
- return -1;
-}
-
-API_EXPORT(int) ap_fprintf(struct file_t *fptr, const char *format, ...)
-{
- int cc;
- va_list ap;
- ap_vformatter_buff_t vbuff;
- char *buf;
- int len;
-
- buf = malloc(HUGE_STRING_LEN);
- if (buf == NULL) {
- return 0;
- }
- /* save one byte for nul terminator */
- vbuff.curpos = buf;
- vbuff.endpos = buf + len - 1;
- va_start(ap, format);
-#if 0
- cc = ap_vformatter(printf_flush, &vbuff, format, ap);
- va_end(ap);
- *vbuff.curpos = '\0';
-#endif
- vsprintf(buf, format, ap);
- len = strlen(buf);
- cc = ap_write(fptr, buf, &len);
- va_end(ap);
- return (cc == -1) ? len : cc;
-}
-
-
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