1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
25 static ssize_t bb_full_fd_action(int src_fd, int dst_fd, size_t size)
29 RESERVE_CONFIG_BUFFER(buffer,BUFSIZ);
31 if (src_fd < 0) goto out;
32 while (!size || total < size)
36 xread = safe_read(src_fd, buffer,
37 (!size || size - total > BUFSIZ) ? BUFSIZ : size - total);
40 /* A -1 dst_fd means we need to fake it... */
41 wrote = (dst_fd < 0) ? xread : bb_full_write(dst_fd, buffer, xread);
43 bb_perror_msg(bb_msg_write_error);
47 } else if (xread < 0) {
48 bb_perror_msg(bb_msg_read_error);
50 } else if (xread == 0) {
58 RELEASE_CONFIG_BUFFER(buffer);
60 return status ? status : (ssize_t)total;
64 extern int bb_copyfd_size(int fd1, int fd2, const off_t size)
67 return(bb_full_fd_action(fd1, fd2, size));
72 extern int bb_copyfd_eof(int fd1, int fd2)
74 return(bb_full_fd_action(fd1, fd2, 0));