62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
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/*
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* The Qubes OS Project, http://www.qubes-os.org
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*
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* Copyright (C) 2010 Rafal Wojtczuk <rafal@invisiblethingslab.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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int write_all(int fd, void *buf, int size)
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{
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int written = 0;
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int ret;
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while (written < size) {
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ret = write(fd, (char *) buf + written, size - written);
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if (ret <= 0) {
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perror("write");
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return 0;
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}
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written += ret;
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}
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// fprintf(stderr, "sent %d bytes\n", size);
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return 1;
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}
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int read_all(int fd, void *buf, int size)
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{
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int got_read = 0;
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int ret;
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while (got_read < size) {
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ret = read(fd, (char *) buf + got_read, size - got_read);
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if (ret == 0) {
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fprintf(stderr, "EOF\n");
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return 0;
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}
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if (ret < 0) {
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perror("read");
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return 0;
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}
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got_read += ret;
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}
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// fprintf(stderr, "read %d bytes\n", size);
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return 1;
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}
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