1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2015 Nahanni Systems, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29
30 #include <sys/types.h>
31 #include <unistd.h>
32
33 #ifndef __FreeBSD__
34 #include <sys/socket.h>
35 #endif
36
37 #include <errno.h>
38
39 #include "sockstream.h"
40
41 ssize_t
stream_read(int fd,void * buf,ssize_t nbytes)42 stream_read(int fd, void *buf, ssize_t nbytes)
43 {
44 uint8_t *p;
45 ssize_t len = 0;
46 ssize_t n;
47
48 p = buf;
49
50 while (len < nbytes) {
51 n = read(fd, p + len, nbytes - len);
52 if (n == 0)
53 break;
54
55 if (n < 0) {
56 if (errno == EINTR || errno == EAGAIN)
57 continue;
58 return (n);
59 }
60 len += n;
61 }
62 return (len);
63 }
64
65 ssize_t
stream_write(int fd,const void * buf,ssize_t nbytes)66 stream_write(int fd, const void *buf, ssize_t nbytes)
67 {
68 const uint8_t *p;
69 ssize_t len = 0;
70 ssize_t n;
71
72 p = buf;
73
74 while (len < nbytes) {
75 #ifdef __FreeBSD__
76 n = write(fd, p + len, nbytes - len);
77 #else
78 n = send(fd, p + len, nbytes - len, MSG_NOSIGNAL);
79 #endif
80 if (n == 0)
81 break;
82 if (n < 0) {
83 if (errno == EINTR || errno == EAGAIN)
84 continue;
85 return (n);
86 }
87 len += n;
88 }
89 return (len);
90 }
91