2 * libdpkg - Debian packaging suite library routines
3 * fdio.c - safe file descriptor based input/output
5 * Copyright © 2009-2010 Guillem Jover <guillem@debian.org>
7 * This 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 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
15 * GNU 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, see <http://www.gnu.org/licenses/>.
27 #include <dpkg/fdio.h>
30 fd_read(int fd, void *buf, size_t len)
38 n = read(fd, ptr + total, len);
40 if (errno == EINTR || errno == EAGAIN)
42 return total ? -total : n;
55 fd_write(int fd, const void *buf, size_t len)
58 const char *ptr = buf;
63 n = write(fd, ptr + total, len);
65 if (errno == EINTR || errno == EAGAIN)
67 return total ? -total : n;