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 chunksize is 0 copy until EOF */
33 extern int bb_copyfd(int fd1, int fd2, const off_t chunksize)
38 RESERVE_CONFIG_BUFFER(buffer,BUFSIZ);
40 remaining = size = BUFSIZ;
42 remaining = chunksize;
46 if (size > remaining) {
50 if ((nread = safe_read(fd1, buffer, size)) > 0) {
51 if (bb_full_write(fd2, buffer, nread) < 0) {
52 bb_perror_msg(bb_msg_write_error); /* match Read error below */
55 if (chunksize && ((remaining -= nread) == 0)) {
60 bb_error_msg("Unable to read all data");
64 } else { /* nread < 0 */
65 bb_perror_msg("Read error"); /* match bb_msg_write_error above */