1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 /* If size is 0 copy until EOF */
33 extern size_t bb_full_fd_action(int src_fd, int dst_fd, const size_t size, ssize_t (*action)(int fd, const void *, size_t))
35 size_t read_total = 0;
36 RESERVE_CONFIG_BUFFER(buffer,BUFSIZ);
38 while ((size == 0) || (read_total < size)) {
42 if ((size == 0) || (size - read_total > BUFSIZ)) {
45 read_try = size - read_total;
48 read_actual = safe_read(src_fd, buffer, read_try);
49 if (read_actual > 0) {
50 if (action && (action(dst_fd, buffer, (size_t) read_actual) != read_actual)) {
51 bb_perror_msg(bb_msg_write_error); /* match Read error below */
55 else if (read_actual == 0) {
57 bb_error_msg("Unable to read all data");
62 bb_perror_msg("Read error");
66 read_total += read_actual;
69 RELEASE_CONFIG_BUFFER(buffer);
75 extern int bb_copyfd_size(int fd1, int fd2, const off_t size)
77 return(bb_full_fd_action(fd1, fd2, size, bb_full_write));
80 extern int bb_copyfd_eof(int fd1, int fd2)
82 return(bb_full_fd_action(fd1, fd2, 0, bb_full_write));