+++ /dev/null
-/* $Id: fakewrite.c 5417 2002-04-15 08:40:20Z rra $ */
-/* Fake write and writev functions for testing xwrite and xwritev. */
-
-#include "config.h"
-
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-
-#include "libinn.h"
-
-ssize_t fake_write(int, const void *, size_t);
-ssize_t fake_pwrite(int, const void *, size_t, off_t);
-ssize_t fake_writev(int, const struct iovec *, int);
-
-/* All the data is actually written into this buffer. We use write_offset
- to track how far we've written. */
-char write_buffer[256];
-size_t write_offset = 0;
-
-/* If write_interrupt is non-zero, then half of the calls to write or writev
- will fail, returning -1 with errno set to EINTR. */
-int write_interrupt = 0;
-
-/* If write_fail is non-zero, all writes or writevs will return 0,
- indicating no progress in writing out the buffer. */
-int write_fail = 0;
-
-/* Accept a write request and write only the first 32 bytes of it into
- write_buffer (or as much as will fit), returning the amount written. */
-ssize_t
-fake_write(int fd UNUSED, const void *data, size_t n)
-{
- size_t total;
-
- if (write_fail)
- return 0;
- if (write_interrupt && (write_interrupt++ % 2) == 0) {
- errno = EINTR;
- return -1;
- }
- total = (n < 32) ? n : 32;
- if (256 - write_offset < total)
- total = 256 - write_offset;
- memcpy(write_buffer + write_offset, data, total);
- write_offset += total;
- return total;
-}
-
-/* Accept a pwrite request and write only the first 32 bytes of it into
- write_buffer at the specified offset (or as much as will fit), returning
- the amount written. */
-ssize_t
-fake_pwrite(int fd UNUSED, const void *data, size_t n, off_t offset)
-{
- size_t total;
-
- if (write_fail)
- return 0;
- if (write_interrupt && (write_interrupt++ % 2) == 0) {
- errno = EINTR;
- return -1;
- }
- total = (n < 32) ? n : 32;
- if (offset > 256) {
- errno = ENOSPC;
- return -1;
- }
- if ((size_t) (256 - offset) < total)
- total = 256 - offset;
- memcpy(write_buffer + offset, data, total);
- return total;
-}
-
-/* Accept an xwrite request and write only the first 32 bytes of it into
- write_buffer (or as much as will fit), returning the amount written. */
-ssize_t
-fake_writev(int fd UNUSED, const struct iovec *iov, int iovcnt)
-{
- int total, i;
- size_t left, n;
-
- if (write_fail)
- return 0;
- if (write_interrupt && (write_interrupt++ % 2) == 0) {
- errno = EINTR;
- return -1;
- }
- left = 256 - write_offset;
- if (left > 32)
- left = 32;
- total = 0;
- for (i = 0; i < iovcnt && left != 0; i++) {
- n = ((size_t) iov[i].iov_len < left) ? iov[i].iov_len : left;
- memcpy(write_buffer + write_offset, iov[i].iov_base, n);
- write_offset += n;
- total += n;
- left -= n;
- }
- return total;
-}