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 #include <sys/cdefs.h>
30
31 #include <sys/types.h>
32 #include <unistd.h>
33
34 #ifndef __FreeBSD__
35 #include <sys/socket.h>
36 #endif
37
38 #include <errno.h>
39
40 #include "sockstream.h"
41
42 ssize_t
stream_read(int fd,void * buf,ssize_t nbytes)43 stream_read(int fd, void *buf, ssize_t nbytes)
44 {
45 uint8_t *p;
46 ssize_t len = 0;
47 ssize_t n;
48
49 p = buf;
50
51 while (len < nbytes) {
52 n = read(fd, p + len, nbytes - len);
53 if (n == 0)
54 break;
55
56 if (n < 0) {
57 if (errno == EINTR || errno == EAGAIN)
58 continue;
59 return (n);
60 }
61 len += n;
62 }
63 return (len);
64 }
65
66 ssize_t
stream_write(int fd,const void * buf,ssize_t nbytes)67 stream_write(int fd, const void *buf, ssize_t nbytes)
68 {
69 const uint8_t *p;
70 ssize_t len = 0;
71 ssize_t n;
72
73 p = buf;
74
75 while (len < nbytes) {
76 #ifdef __FreeBSD__
77 n = write(fd, p + len, nbytes - len);
78 #else
79 n = send(fd, p + len, nbytes - len, MSG_NOSIGNAL);
80 #endif
81 if (n == 0)
82 break;
83 if (n < 0) {
84 if (errno == EINTR || errno == EAGAIN)
85 continue;
86 return (n);
87 }
88 len += n;
89 }
90 return (len);
91 }
92